https://www.khanacademy.org/math/geometry/hs-geo-trig/xff63fac4:hs-geo-trig-ratios-similarity/v/using-similarity-to-estimate-ratio-between-side-lengths 2022-10-07T00:00:24.225559754Z Using similarity to estimate ratio between side lengths When two right triangles share an acute angle measure, the ratios of the corresponding side lengths within the triangles are equal.  Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/8f7dec08-5582-4d6a-8446-7075c49131f2_1280_720_base.png Using similarity to estimate ratio between side lengths When two right triangles share an acute angle measure, the ratios of the corresponding side lengths within the triangles are equal.  https://cdn.kastatic.org/ka-youtube-converted/M-jQMTWBuzQ.mp4/M-jQMTWBuzQ.mp4 275 Razones en triángulos rectángulos https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-pyth-theorem/a/getting-ready-for-right-triangles-and-trigonometry 2026-03-26T05:50:46.505911114Z Getting ready for right triangles and trigonometry Practicing finding right triangle side lengths with the Pythagorean theorem, rewriting square root expressions, and visualizing right triangles in context helps us get ready to learn about right triangles and trigonometry. article https://www.khanacademy.org/math/geometry/hs-geo-trig/xff63fac4:hs-geo-trig-ratios-similarity/v/using-right-triangle-ratios-to-approximate-angle-measure 2022-09-10T02:03:40.164764806Z Using right triangle ratios to approximate angle measure Because of similarity, all right triangles with a given acute angle measure have equal ratios between their side lengths. So if we know two of the side lengths of a right triangle, we can figure out the angle measures, too! Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/7a305e67-b9fa-4905-bd12-6076601826b1_1280_720_base.png Using right triangle ratios to approximate angle measure Because of similarity, all right triangles with a given acute angle measure have equal ratios between their side lengths. So if we know two of the side lengths of a right triangle, we can figure out the angle measures, too! https://cdn.kastatic.org/ka-youtube-converted/fPXQTEYjF-o.mp4/fPXQTEYjF-o.mp4 186 Razones en triángulos rectángulos https://www.khanacademy.org/math/geometry/hs-geo-trig/xff63fac4:hs-geo-trig-ratios-similarity/a/opposite-adjacent-hypotenuse 2022-09-10T02:03:40.164764806Z Hypotenuse, opposite, and adjacent In a right triangle, the hypotenuse is the longest side, an "opposite" side is the one across from a given angle, and an "adjacent" side is next to a given angle. article https://www.khanacademy.org/math/geometry/hs-geo-trig/xff63fac4:hs-geo-trig-ratios-similarity/a/side-ratios-in-right-triangles-as-a-function-of-the-angles 2022-09-10T02:03:40.164764806Z Side ratios in right triangles as a function of the angles  By similarity, side ratios in right triangles are properties of the angles in the triangle. article https://www.khanacademy.org/math/geometry/hs-geo-trig/xff63fac4:hs-geo-trig-ratios-similarity/e/use-ratios-in-right-triangles 2023-01-09T01:20:25.313776156Z Use ratios in right triangles Relate angles and side lengths using side length ratios in similar right triangles. exercise