https://www.khanacademy.org/math/cc-third-grade-math/imp-geometry/imp-decompose-figures-to-find-area/v/decomposing-shapes-to-find-area-add-math-3rd-grade-khan-academy 2023-04-27T21:01:13.279921809Z Decomposing shapes to find area: add Let's find the area of an irregular 10-sided shape by breaking it into smaller rectangles. We'll learn to decompose complex shapes, calculate the area of each rectangle, and combine those areas to find the total area, making the topic engaging and enjoyable. Lindsay Spears video https://cdn.kastatic.org/googleusercontent/m-kdfvmeSGRBSW2ORQ3w1EHZngH9ppYHLpy0Y4I7Bj7hKU9nedf_WlBx6Gg5Ql_lyq_JluDvQSX9uKqhBDmmsiUG Decomposing shapes to find area: add Let's find the area of an irregular 10-sided shape by breaking it into smaller rectangles. We'll learn to decompose complex shapes, calculate the area of each rectangle, and combine those areas to find the total area, making the topic engaging and enjoyable. https://cdn.kastatic.org/ka-youtube-converted/JTg8gyQ37pM.mp4/JTg8gyQ37pM.mp4 216 Compound shapes and parts of 2D shapes https://www.khanacademy.org/math/cc-third-grade-math/imp-geometry/imp-decompose-figures-to-find-area/e/decompose-shapes-to-find-area 2026-04-07T23:17:37.123726494Z Decompose figures to find area Practice decomposing irregular shapes to find their area.   Lindsay Spears exercise https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-plane-figures/cc-6th-area/e/decompose-area-with-triangles 2026-03-22T06:53:37.482695608Z Decompose area with triangles Find the areas of complex polygons by breaking them into triangles and rectangles. Charlie Auen exercise https://www.khanacademy.org/math/geometry-home/geometry-area-perimeter/geometry-area-trap-composite/v/perimeter-and-area-of-a-non-standard-polygon 2021-02-16T16:08:12Z Perimeter & area of composite shapes Sal finds perimeter and area of a non-standard polygon. Sal Khan video https://cdn.kastatic.org/googleusercontent/1McHIK59DYK2lrrTCxNx3_BFC7Thb3qG5KXC0D-2DcpGcRJi5c4iLdN_sDkstgJm9nLCtamfHZveQe_kMJsazfk Perimeter & area of composite shapes Sal finds perimeter and area of a non-standard polygon. https://cdn.kastatic.org/ka-youtube-converted/7S1MLJOG-5A.mp4/7S1MLJOG-5A.mp4 183 Compound shapes and parts of 2D shapes https://www.khanacademy.org/math/geometry-home/geometry-area-perimeter/geometry-area-trap-composite/v/interesting-perimeter-and-area-problems 2021-07-02T09:35:27Z Challenge problems: perimeter & area Three example problems involving perimeter and area. Sal Khan video https://cdn.kastatic.org/googleusercontent/yJ_orsCir3YluJY_BqS4BX6_KrBT6H5nwWQFd7ctNVfaCLWMT9HVdx53c0F_BPRB_IpQ-OReGhou7TSsdjcOm3Et3A Challenge problems: perimeter & area Three example problems involving perimeter and area. https://cdn.kastatic.org/ka-youtube-converted/vWXMDIazHjA.mp4/vWXMDIazHjA.mp4 493 Compound shapes and parts of 2D shapes https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-plane-figures/cc-6th-area/v/area-breaking-up-shape 2022-11-16T04:22:43.7414897Z Area of composite shapes We can sometimes calculate the area of a complex shape by dividing it into smaller, more manageable parts. In this example, we can determine the area of two triangles, a rectangle, and a trapezoid, and then add up the areas of the four shapes to get the total area. Sal Khan video https://cdn.kastatic.org/googleusercontent/yOLp742TUQZQUltkfNcy9ijXlddMEggpZACGkeyAjMydlk0PNASnOP7pFtrl2KSM8DwYMgvG2jCrFUEVUGViOS7x Area of composite shapes We can sometimes calculate the area of a complex shape by dividing it into smaller, more manageable parts. In this example, we can determine the area of two triangles, a rectangle, and a trapezoid, and then add up the areas of the four shapes to get the total area. https://cdn.kastatic.org/ka-youtube-converted/loAA3TCNAvU.mp4/loAA3TCNAvU.mp4 315 Compound shapes and parts of 2D shapes https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-plane-figures/cc-6th-area/e/area-of-quadrilaterals-and-polygons 2025-02-06T19:34:52.815179935Z Area of composite shapes Practice finding the areas of complex shapes that are composed of smaller shapes. Chanda Stanaland Johnson exercise https://www.khanacademy.org/math/geometry-home/geometry-area-perimeter/geometry-area-trap-composite/e/composing-and-decomposing-shapes 2026-04-07T23:36:17.218592739Z Area challenge Practice solving problems involving triangles, parallelograms, and composite figures. Exercises include decimals, fractions, and word problems. Area of circles is not included. elizabeth exercise https://www.khanacademy.org/math/cc-sixth-grade-math/x0267d782:cc-6th-plane-figures/cc-6th-area/v/area-of-quadrilateral-with-2-parallel-sides 2023-06-30T00:54:25.287354524Z Area of quadrilateral with 2 parallel sides Learn how to find the area of a quadrilateral by splitting it into two triangles. Use the formula for triangle area (1/2 base times height) for each triangle. Add the areas together for the total quadrilateral area. It's as easy as pie...or should I say, as easy as area! Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/687379e4-2154-4ea9-9fe9-724a4de9f954_1280_720_base.png Area of quadrilateral with 2 parallel sides Learn how to find the area of a quadrilateral by splitting it into two triangles. Use the formula for triangle area (1/2 base times height) for each triangle. Add the areas together for the total quadrilateral area. It's as easy as pie...or should I say, as easy as area! https://cdn.kastatic.org/ka-youtube-converted/uEIoh8uWs1U.mp4/uEIoh8uWs1U.mp4 222 Compound shapes and parts of 2D shapes