{"results":"
\n\n
\n
\n
\n
\n\n12\nItems in Topic\n\n
\n
\n
\n\"Math\n\n
\n
\n
\n
\nLesson Planet Curated\n
\n

\nMath Antics Geometry Video Lessons\n

\n
\n\nFor Teachers\n\n4th - 8th\n\nStandards\n
\n
\n
\nThe point of this collection of 12 videos is to introduce learners to three basic parts of geometry—points, lines, and planes. The presenter provides definitions, shows how to classify shapes, provides examples, and shows how to use...\n
\n
\n
\n\nGet Free Access\n
\n
\n
\n
\n\n
\n\n
\n\n
\n
\n
\n
\n\n24\nItems in Unit\n\n
\n
\n
\n\"Geometry\n\n
\n
\n
\n
\nLesson Planet Curated\n
\n

\nGeometry Unit 4: Triangle Congruence\n

\n
\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
\n
\n
\nThe Geometry Unit 4: Triangle Congruence unit module contains five lessons—each with a video, teacher reference, practice packets, solutions, and corrective assignments. To begin, scholars review the types of triangles, then investigate...\n
\n
\n
\n\nGet Free Access\n
\n
\n
\n
\n\n
\n\n
\n\n
\n
\n
\n
Instructional Video5:02
\n
\n
\n
\n\"Why\n\n
\n
\n
\n
\nCurated OER\n
\n

\nWhy Are the Angles of Equilateral Triangles Always Equal to 60¼?\n

\n
\n\nFor Teachers\n\n6th - 10th\n
\n
\n
\nLearn how to identify an equilateral triangle by evaluating its congruent sides. Once you've determined that that sides are congruent you'll be able to use the triangle sum theorem to determine the angles in an equilateral triangle. This...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video3:02
\n
\n
\n
\n\"Equilateral\n\n
\n
\n
\n
\nCK-12 Foundation\n
\n

\nEquilateral Triangles: Lesson\n

\n
\n\nFor Students\n\n8th - 11th\n\nStandards\n
\n
\n
\nTake a second look at triangles that are equal all the way around. The video reminds viewers what an equilateral triangle is and points out that the three angles are the same. Using the fact that equilateral triangles are also isosceles,...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video11:39
\n
\n
\n
\n\"Area\n\n
\n
\n
\n
\nKhan Academy\n
\n

\nArea of Inscribed Equilateral Triangle (Some Basic Trig Used)\n

\n
\n\nFor Students\n\n9th - 12th\n
\n
\n
\nDelving into basic trigonometry, this resource shows how to find the area of an inscribed equilateral triangle. Using a high-level problem, HeronÕs theorem is used to find the area of a figure. Before SAT testing, use this as a review.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video2:47
\n
\n
\n
\n\"Constructing\n\n
\n
\n
\n
\nCorbett Maths\n
\n

\nConstructing Equilateral Triangles and 60 Degree Angles\n

\n
\n\nFor Students\n\n8th - 12th\n\nStandards\n
\n
\n
\nCreating a 60-degree angle also creates an equilateral triangle. By watching the video, individuals learn the steps required to construct a 60-degree angle. The presentation shows that the process is the same for constructing an...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Assessment
\n
\n
\n
\n\"Coordinates\n\n
\n
\n
\n
\nIllustrative Mathematics\n
\n

\nCoordinates of Equilateral Triangles\n

\n
\n\nFor Students\n\n9th - 12th\n\nStandards\n
\n
\n
\nCan it be constructed? The task poses the question whether it is possible to have an equilateral triangle with its vertices located at integer coordinates. Pupils work with their knowledge of trigonometric ratios and the Pythagorean...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Construct\n\n
\n
\n
\n
\nEngageNY\n
\n

\nConstruct an Equilateral Triangle (part 1)\n

\n
\n\nFor Teachers\n\n9th - 10th\n\nStandards\n
\n
\n
\nDrawing circles isn't the only thing compasses are good for. For this first installment of a 36-part series, high schoolers learn how to draw equilateral triangles by investigating real-world situations, such as finding the location of a...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video
\n
\n
\n
\n\"SAT\n\n
\n
\n
\n
\nKhan Academy\n
\n

\nSAT Prep: Test 1 Section 6 Part 5\n

\n
\n\nFor Students\n\n9th - 12th\n
\n
\n
\nBack with \"more energy,\" Sal begins his explanation of problems 15-18 on page 412 of The Official SAT Study Guide. Problems include angles of equilateral triangles, rectangles, and graphing slopes.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Equilateral\n\n
\n
\n
\n
\nCurated OER\n
\n

\nEquilateral Triangle Symmetries Closure Activity\n

\n
\n\nFor Teachers\n\nHigher Ed\n
\n
\n
\nStudents explore the symmetries of an equilateral triangle. In this lesson on symmetry, students determine the composition of given equilateral triangles using both rotational and reflectional symmetries.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video
\n
\n
\n
\n\"SAT\n\n
\n
\n
\n
\nKhan Academy\n
\n

\nSAT Prep: Test 4 Section 2 Part 5\n

\n
\n\nFor Students\n\n9th - 12th\n
\n
\n
\nPicking up where he left off (problem 17), Sal demonstrates graphing functions with an informative and clear explanation. Additionally, problem 18 involves finding the values of angles in an equilateral triangle.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Worksheet
\n
\n
\n
\n\"Circles:\n\n
\n
\n
\n
\nCurated OER\n
\n

\nCircles: Geometry Review Worksheet\n

\n
\n\nFor Students\n\n10th\n\nStandards\n
\n
\n
\nTenth graders solve and complete 14 different geometry problems. First, they find the area and circumference of a circle with a given radius. Then, they find the area between a circle and an inscribed equilateral triangle given the...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Reflections\n\n
\n
\n
\n
\nCurated OER\n
\n

\nReflections and Equilateral Triangles II\n

\n
\n\nFor Teachers\n\n9th - 10th\n\nStandards\n
\n
\n
\nGiven the lines of symmetry in an equilateral triangle, your learners find where the pre-image vertices are mapped onto the new image. They explore the properties of equilateral triangles, the impact of reflections, and the...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Reflections\n\n
\n
\n
\n
\nCurated OER\n
\n

\nReflections and Equilateral Triangles\n

\n
\n\nFor Teachers\n\n9th - 10th\n\nStandards\n
\n
\n
\nYour learners collaboratively find the lines of symmetry in an equilateral triangle using rigid transformations and symmetry. Through congruence proofs they show that they understand congruence in terms of rigid motions as they...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Finding\n\n
\n
\n
\n
\nCurated OER\n
\n

\nFinding the Area of an Equilateral Triangle\n

\n
\n\nFor Teachers\n\n9th - 11th\n\nStandards\n
\n
\n
\nThe problem seems simple: find the area of the equilateral triangle whose sides are each length 1. In fact, this same problem is solved in 8th grade, addressing a different Common Core standard, using the formula for area of a triangle...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Worksheet
\n
\n
\n
\n\"Perimeter\n\n
\n
\n
\n
\nCurated OER\n
\n

\nPerimeter of Equilateral Triangle\n

\n
\n\nFor Students\n\n6th - 8th\n
\n
\n
\nIn this perimeter worksheet, students calculate the perimeter of 6 equilateral triangles.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Worksheet
\n
\n
\n
\n\"Equilateral\n\n
\n
\n
\n
\nCurated OER\n
\n

\nEquilateral Triangles\n

\n
\n\nFor Students\n\nK - 2nd\n\nStandards\n
\n
\n
\nIn this equilateral triangles worksheet, students study the various triangles to identify equilateral triangles. Students may count the triangles.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Equilateral\n\n
\n
\n
\n
\nCurated OER\n
\n

\nEquilateral Triangles\n

\n
\n\nFor Teachers\n\n4th - 5th\n
\n
\n
\nStudents examine the attribute of equilateral triangles. In this equilateral triangle lesson, students examine a number of paper triangles to determine how they are classified. They determine how triangles are depicted in Navajo rugs.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Constructions\n\n
\n
\n
\n
\nCurated OER\n
\n

\nConstructions of Isosceles and Equilateral Triangles\n

\n
\n\nFor Teachers\n\n4th - 9th\n
\n
\n
\nStudents explore the difference between drawing and constructing a triangle utilizing The Geometer's Sketchpad on the computer. They create, develop and script constructions for both isosceles and equilateral triangles. Each student has...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Construct\n\n
\n
\n
\n
\nEngageNY\n
\n

\nConstruct an Equilateral Triangle (part 2)\n

\n
\n\nFor Teachers\n\n9th - 10th\n\nStandards\n
\n
\n
\nTriangles, triangles, and more triangles! In this second installment of a 36-part series, your young mathematicians explore two increasingly challenging constructions, requiring them to develop a way to construct three triangles that...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video5:33
\n
\n
\n
\n\"What\n\n
\n
\n
\n
\nCurated OER\n
\n

\nWhat are Equilateral, Isosceles, and Scalene Triangles?\n

\n
\n\nFor Teachers\n\n5th - 8th\n
\n
\n
\nTriangles are classified by their angle measurement as well as by the length of their sides. Here are some names that identify the types of triangles: right, isosceles, equilateral, scalene, obtuse, and acute. Watch this video to learn...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video6:22
\n
\n
\n
\n\"What\n\n
\n
\n
\n
\nCurated OER\n
\n

\nWhat is a 30¡-60¡-90¡ Triangle?\n

\n
\n\nFor Teachers\n\n10th - 12th\n
\n
\n
\nIs it possible to take an equilateral triangle and cut it in half to make a 30-60-90 special triangle to make it easier to solve a problem? Why yes, of course! It's even possible to find the missing length without using the Pythagorean...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Worksheet
\n
\n
\n
\n\"Area\n\n
\n
\n
\n
\nCurated OER\n
\n

\nArea of Equilateral Triangles\n

\n
\n\nFor Students\n\n6th - 10th\n
\n
\n
\nIn this area of equilateral triangles worksheet, students find the area of equilateral triangles written out in word problems. Students complete the area for 4 triangles.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Worksheet
\n
\n
\n
\n\"Right\n\n
\n
\n
\n
\nCurated OER\n
\n

\nRight Triangles\n

\n
\n\nFor Students\n\n10th\n
\n
\n
\nFor this right triangles worksheet, 10th graders solve and complete 13 different problems. First, they find the lengths of both missing sides. Then, students find the altitude of an equilateral triangle given the measure of one side....\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n","pagination":"
\n
\n
\n"}