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\n\"Geometry\n\n
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\nGeometry Unit 6: Similar Figures\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nSimilar figures are the topic of Geometry Unit 6. Each of the four resources in the unit module contains a video, teacher reference, practice packets, solutions, and corrective assignments. In the first lesson, pupils learn the...\n
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\n\n12\nItems in Course\n\n
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\n\"Flipped\n\n
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\nFlipped Math: Geometry\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nImagine taking a complete geometry course remotely! Eleven units make up the My Geometry course. Each unit follows the Flipped-Mastery cycle of learning, divided into two semesters. Pupils watch and take notes on a video that details the...\n
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\n\n34\nItems in Assessment Set\n\n
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\n\"Balanced\n\n
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\nLesson Planet Curated\n
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\nBalanced Assessment: Basic High School Packet\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nSeventeen short assessments are designed to test scholars’ knowledge of basic Algebra 1 concepts. Pupils determine the houses that are a given maximum distance from a school, complete charts to show equivalent scale factors, and...\n
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Instructional Video7:22
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\nWhat are Similar Figures?\n

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\n\nFor Teachers\n\n6th - 8th\n
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\nSimilar figures have the same shape, the same corresponding angles, but different lengths of their corresponding sides. The teacher explains just what all that means. She demonstrates how to compare the two shapes to prove they are similar.\n
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\n\"Similarity\n\n
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\nSimilarity and Dilations - Discover Properties of Similar Figures\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nLearners investigate properties of similar figures. In this properties of similar figures lesson plan, pupils construct similar figures using Cabri Jr. They dilate their figure to create a similar one, and discuss the relationships...\n
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Instructional Video1:48
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\n\"Congruent\n\n
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\nCongruent and Similar Shapes\n

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\nBy definition, a congruent shape remains similar, but similar shapes may or may not be congruent. Scholars watch a video explaining the sometimes-confusing concept. Practice problems ensure pupils demonstrate their understanding to...\n
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\n\"Congruent\n\n
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\nCongruent and Similar Polygons\n

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\n\nFor Teachers\n\n9th - 12th\n
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\nWhat's similar about congruent and similar polygons? Young mathematicians first measure the side lengths and angles of given figures. They use these measurements to determine relationships between side lengths and angles of congruent and...\n
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Instructional Video3:26
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\n\"Area\n\n
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\nArea and Perimeter of Similar Polygons: Lesson\n

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\n\nFor Students\n\n7th - 11th\n
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\nFind the square of the scale factor. A component of a large playlist on geometry discusses the ratios of the perimeters and areas of two similar polygons. The resource shows examples in finding the ratios that lead to a pattern.\n
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Instructional Video8:58
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\n\"Similar\n\n
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\nCorbett Maths\n
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\nSimilar Shapes Areas\n

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\n\nFor Students\n\n6th - 12th\n\nStandards\n
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\nJust how similar are the areas of similar figures? An educational YouTube video describes how to determine the areas of similar figures. Given the area of one figure and the measurements of corresponding sides of each figure, viewers see...\n
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Instructional Video4:12
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\nHow Do You Find a Scale Factor in Similar Figures?\n

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\n\nFor Teachers\n\n6th - 10th\n
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\nThree angles of one triangle are equal to the corresponding angles in another triangle. Use a ratio of corresponding sides to find the scale factor. Actually, there are two scale factor values. The instructor will explain how to get both...\n
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Instructional Video4:48
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\nHow Do You Find a Scale Factor in Similar Figures?\n

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\n\nFor Teachers\n\n6th - 12th\n
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\nThree angles of one triangle are equal to the corresponding angles in another triangle. Use a ratio of corresponding sides to find the scale factor. Actually, there are two scale factor values. The instructor will explain how to get both...\n
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\n\"Similar\n\n
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\nSimilar Figures\n

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\n\nFor Teachers\n\n7th\n
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\nHow similar do figures have to be to be similar figures? Individuals learn to identify similar figures by verifying that angles are congruent and sides are proportional. Additionally, they match the corresponding parts of similar figures.\n
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\n\"Similar\n\n
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\nSimilar Shapes\n

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\n\nFor Students\n\nK - 1st\n\nStandards\n
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\nIn geometry, similar and congruent shapes are often confused. Shapes that are similar are the same shape, but a different size. This activity gives young learners some practice in identifying similar shapes. There are five polygons...\n
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Instructional Video11:10
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\n\"Similar\n\n
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\nCorbett Maths\n
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\nSimilar Shapes Sides\n

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\n\nFor Students\n\n6th - 12th\n\nStandards\n
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\nScale up a lesson on similarity. Young mathematicians watch a video that investigates the sides of similar figures. They see how to calculate missing sides from the given measures using scale factors. \n
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\n\"Similar\n\n
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\nCurated OER\n
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\nSimilar Figures\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nYour class will use a TI calculator to drag vertices of rectangles and triangles to observe what happens to ratios of pairs of sides within each figure. They will apply the definition of similarity to identify similar shapes. The lesson...\n
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\n\"Ratios\n\n
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\nWillow Tree\n
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\nRatios and Proportions with Congruent and Similar Polygons\n

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\n\nFor Students\n\n8th - 11th\n\nStandards\n
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\nInvestigate how similar and congruent figures compare. Learners understand congruent figures have congruent sides and angles, but similar figures only have congruent angles — their sides are proportional. After learning the...\n
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\n\"Similar\n\n
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\nMathed Up!\n
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\nSimilar Shapes\n

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\n\nFor Students\n\n8th - 11th\n\nStandards\n
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\nSimilar shapes are all about the scale. Given seven problems, pupils use scale factors to determine measurements within similar shapes. While solving the problem, scholars also determine whether two figures are similar and use...\n
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Instructional Video14:57
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\nSimilar Figures\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nUse some similar problems to find side lengths. Pupils learn the definition of similar figures and how it relates to corresponding angles and sides. Using the definition, individuals calculate the lengths of missing sides and practice...\n
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Instructional Video10:17
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\nUnit 6 Review: Similar Figures\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nAfter a short review of the material from the Similar Figures Unit, pupils work through 18 problems to further practice the skills from the unit. Scholars apply those skills in the application problems at the end of the review.\n
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Instructional Video5:44
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\nHow Do You Find Missing Measurements of Similar Figures Using a Scale Factor?\n

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\n\nFor Teachers\n\n6th - 8th\n
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\nSimilar figures have corresponding sides and corresponding angles. With this in mind, missing values can be found by using a scale factor. Not sure how to do that? Watch this video as the instructor illustrates how to set up the known...\n
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Worksheet
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\n\"Similar\n\n
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\nSimilar Polygons\n

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\nIn this similar polygons worksheet, 10th graders solve 10 different problems that include determining various similar polygons. First, they determine the perimeter of a second triangle given the measures of all angles in the first. Then,...\n
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Worksheet
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\n\"Using\n\n
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\nUsing Similar Polygons\n

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\nIn this geometry worksheet, students use the properties of similar polygons to find the indicated missing length or the scale factor. The two page worksheet contains twenty-two questions. Answers are included.\n
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Instructional Video6:22
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\nHow Do You Find Missing Measurements of Similar Figures Using a Proportion?\n

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\nTwo similar triangles have the same angles, but their legs have different lengths. This means their angles are congruent, and thusly, their corresponding sides are congruent. So there is a missing measurement that needs to be found. Set...\n
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Instructional Video1:25
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\nProportions and Similar Figures\n

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\n\nFor Teachers\n\n5th - 8th\n
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\nDuane demonstrates how to find a missing length in figures that are similar. In this example he uses two similar triangles.\n
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