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Lesson Plan
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\n\"Developing\n\n
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\nCurated OER\n
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\nDeveloping Formulas for Triangles and Quadrilaterals \n

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\n\nFor Teachers\n\n10th\n
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\nIn this geometry worksheet, 10th graders determine the area of triangles, parallelograms, trapezoids, kites, and rhombuses. The one page worksheet contains eleven problems. Answers are included.\n
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\n\nGet Free Access\n\nSee Review\n
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Lesson Plan
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\n\"Areas\n\n
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\nCurated OER\n
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\nAreas of Trapezoids, Rhombuses and Kites\n

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\n\nFor Teachers\n\n8th - 10th\n
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\nStudents calculate the area of different polygons. In this geometry lesson, students find the area for trapezoids, rhombuses and kites.\n
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Worksheet
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\n\"Polygon\n\n
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\nCurated OER\n
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\nPolygon Area Review Sheet\n

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\n\nFor Students\n\n9th - 12th\n
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\nIn this polygon area worksheet, students answer 8 questions involving the area of several polygons. Students are given various details of the polygon and must find lengths of various polygons.\n
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Lesson Plan
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\n\"Bill's\n\n
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\nCurated OER\n
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\nBill's Badge\n

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\n\nFor Teachers\n\n6th - 8th\n
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\nMiddle schoolers explore the making of circles and concepts related to them in geometry. The project is inquiry based will focus upon students making their own nametags. The construction is ideal for hands on middle schoolers.\n
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Instructional Video
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\n\"Sophia:\n\n
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\nSophia Learning\n
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\nSophia: Area of a Rhombus\n

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\n\nFor Students\n\n9th - 10th\n
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\nThis video lesson demonstrates two ways for calculating the area of a rhombus. Students can check their understanding with an assessment. [4:55]\n
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Handout
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\n\"Math\n\n
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\nMath Open Reference\n
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\nMath Open Reference: Area of a Rhombus\n

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\n\nFor Students\n\n9th - 10th\n
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\nLearn about the area of a rhombus with this handy reference guide. Provides a detailed definition, formulas, and an interactive activity that enhances further explanation. Includes links to related topics.\n
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\n\nGet Free Access\n\nSee Review\n
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Instructional Video
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\n\"Khan\n\n
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\nKhan Academy\n
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\nKhan Academy: Geometry: Proof Rhombus Area Half Product of Diagonal Length\n

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\n\nFor Students\n\n9th - 10th\n
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\nDemostrates how to prove that one way to find the area of a rhombus is by taking half the product of the diagonals. [5:07]\n
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Instructional Video
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\n\"Khan\n\n
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\nKhan Academy\n
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\nKhan Academy: Geometry: 2003 Aime Ii Problem 7\n

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\n\nFor Students\n\n9th - 10th\n
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\nExplanation of 2003 AIME II (American Invitational Mathematics Examination) Problem 7. Finding the area of a rhombus based on the circumradii of triangles. This video also appears in the Geometry: Polygons, quadrilaterals, and...\n
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\n\nGet Free Access\n\nSee Review\n
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Instructional Video
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\n\"Khan\n\n
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\nKhan Academy\n
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\nKhan Academy: Geometry: Ca Geometry: Area, Circumference, Volume\n

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\n\nFor Students\n\n9th - 10th\n\nStandards\n
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\nDemonstrates solutions to problems #31-35 of California Geometry released state test questions. Problems address understanding of perimeter, volume, surface area, area, and Pythagorean theorem. [10:53]\n
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\n\nGet Free Access\n\nSee Review\n
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Instructional Video
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\n\"Khan\n\n
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\nKhan Academy\n
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\nKhan Academy: Perpendicular Bisectors: 2003 Aime Ii Problem 7\n

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\n\nFor Students\n\n9th - 10th\n
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\nFinding the area of a rhombus based on the circumradii of triangles.\n
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\n\nGet Free Access\n\nSee Review\n
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Unit Plan
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\n\"Wolfram\n\n
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\nWolfram Research\n
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\nWolfram Math World: Rhombus\n

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\n\nFor Students\n\n9th - 10th\n
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\nThis math site explains properties of the rhombus, gives a visual aid to help with the formula given for it's area.\n
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\n\nGet Free Access\n\nSee Review\n
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Activity
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\n\"Analyze\n\n
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\nAnalyze Math\n
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\nAnalyze Math: Rhombus Problems\n

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\n\nFor Students\n\n9th - 10th\n\nStandards\n
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\nThe geometry tutorial explores the definition, area, and properties of a rhombus. The activity has several examples with detailed solutions.\n
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\n\nGet Free Access\n\nSee Review\n
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Handout
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\n\"Ixl\n\n
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\nQuia\n
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\nIxl Learning: Rhombuses\n

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\n\nFor Students\n\n3rd - 5th\n\nStandards\n
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\nBrush up on your math skills relating to rhombuses then try some practice problems to test your understanding.\n
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\n\nGet Free Access\n\nSee Review\n
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Interactive
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\n\"Calculator\n\n
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\nCalculator Soup\n
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\nCalculator Soup: Rhombus Calculator\n

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\n\nFor Students\n\n9th - 10th\n
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\nCalculate certain variables of a rhombus depending on the inputs provided. Calculations include side lengths, corner angles, diagonals, height, perimeter, and area of a rhombus.\n
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