https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/pythagorean-theorem-application/v/area-of-an-isosceles-triangle 2023-06-02T19:09:07.369858129Z Use Pythagorean theorem to find area of an isosceles triangle We can find the area of an isosceles triangle using the Pythagorean theorem. Once we recognize the triangle as isosceles, we divide it into congruent right triangles. Then we use the theorem to find the height. Last, we calculate the area with the formula: 1/2 × base × height. video https://cdn.kastatic.org/ka_thumbnails_cache/dd3db97f-cee5-4241-8a5e-9a5ff6d3c880_1280_720_base.png Use Pythagorean theorem to find area of an isosceles triangle We can find the area of an isosceles triangle using the Pythagorean theorem. Once we recognize the triangle as isosceles, we divide it into congruent right triangles. Then we use the theorem to find the height. Last, we calculate the area with the formula: 1/2 × base × height. https://cdn.kastatic.org/ka-youtube-converted/yZ4CbopnVBg.mp4/yZ4CbopnVBg.mp4 240 Pythagorean theorem application https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/pythagorean-theorem-application/e/use-pythagorean-theorem-to-find-area-and-perimeter 2026-03-26T05:50:46.505911114Z Use Pythagorean theorem to find perimeter Find the perimeter of triangles and quadrilaterals by first using the Pythagorean Theorem to find missing side lengths. Lindsay exercise https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/pythagorean-theorem-application/e/use-pythagorean-theorem-to-find-area 2026-04-08T00:16:02.937952483Z Use Pythagorean theorem to find area Find the area of triangles and quadrilaterals by first using the Pythagorean Theorem to find missing side lengths. Lindsay exercise https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/pythagorean-theorem-application/v/pythagorean-theorem-3 2023-06-02T19:09:07.369858129Z Pythagorean theorem word problem: carpet If we draw the diagonal on a rectangular carpet, then its length, width, and diagonal form a right triangle. Since we know the length and diagonal measurements, we can use the Pythagorean theorem to solve for the missing width of the carpet. Sal Khan video https://cdn.kastatic.org/googleusercontent/yu5zzccGvx1c9EkgqD5u-SX3Qt42CJ2BRnvfLfSYtExN8xzpTmsAD64vGZz5qoGjBvup3ST8TRsu258UWRd_mF0 Pythagorean theorem word problem: carpet If we draw the diagonal on a rectangular carpet, then its length, width, and diagonal form a right triangle. Since we know the length and diagonal measurements, we can use the Pythagorean theorem to solve for the missing width of the carpet. https://cdn.kastatic.org/ka-youtube-converted/T0IOrRETWhI.mp4/T0IOrRETWhI.mp4 180 Pythagorean theorem application https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/pythagorean-theorem-application/v/pythagorean-theorem-1 2023-06-02T19:09:07.369858129Z Pythagorean theorem word problem: fishing boat If we assume that the mast of a boat is at a right angle to the deck, then we can model the length of a rope stretched between the mast and deck as the hypotenuse of a right triangle. Then we can use the Pythagorean theorem to relate the lengths. Sal Khan video https://cdn.kastatic.org/googleusercontent/22gCRD837Vkb33-KqU1EhKn7rrhfmSAOggXycJrnLu-4ybDkIdPgF5UamYIBtD50PDrdaiCJkz0Qod7i2HU-JJX1nQ Pythagorean theorem word problem: fishing boat If we assume that the mast of a boat is at a right angle to the deck, then we can model the length of a rope stretched between the mast and deck as the hypotenuse of a right triangle. Then we can use the Pythagorean theorem to relate the lengths. https://cdn.kastatic.org/ka-youtube-converted/JVrkLIcA2qw.mp4/JVrkLIcA2qw.mp4 272 Pythagorean theorem application https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/pythagorean-theorem-application/e/pythagorean-theorem-word-problems--basic 2026-03-31T14:59:02.026924717Z Pythagorean theorem word problems Use the Pythagorean theorem to solve word problems. Lindsay exercise https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-pyth-theorem/v/pythagoriean-theorem-in-3d 2023-05-09T21:01:11.605979523Z Pythagorean theorem in 3D Discover how to find the length of an edge in a 3D shape using the Pythagorean theorem! This fun math lesson explores right pyramids and rectangular prisms, guiding you through solving for unknown lengths by applying the theorem multiple times. video https://cdn.kastatic.org/googleusercontent/7k1M1EyXYGPKPHSaYArKFhjUd2VqktV6-S-sr0MIYbAGjyThfOSDyZ9Tag2u6hQAa29YY0KPAZvkAtvXR-4eUdR4BQ Pythagorean theorem in 3D Discover how to find the length of an edge in a 3D shape using the Pythagorean theorem! This fun math lesson explores right pyramids and rectangular prisms, guiding you through solving for unknown lengths by applying the theorem multiple times. https://cdn.kastatic.org/ka-youtube-converted/1UQ5IbihJNI.mp4/1UQ5IbihJNI.mp4 356 Pythagorean theorem application https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-pyth-theorem/e/pythagorean-theorem-in-3d 2026-04-07T22:23:57.656416987Z Pythagorean theorem in 3D Apply the Pythagorean theorem to find lengths in prisms and pyramids. Rhonda Hughes exercise