https://www.khanacademy.org/math/geometry-home/geometry-angles/old-angles/v/angles-formed-between-transversals-and-parallel-lines 2020-10-07T19:09:50Z Angles formed between transversals and parallel lines Angles of parallel lines Sal Khan video https://cdn.kastatic.org/googleusercontent/_WqdWjC2r-BUB4uCnoFh1kz5g_xiOucaoTbss3Y55BlIZVKZFPI0Xh7DKPCRAJ2UiafrhX5w5TvaBzhcR_W96TQ Angles formed between transversals and parallel lines Angles of parallel lines https://cdn.kastatic.org/ka-youtube-converted/gRKZaojKeP0.mp4/gRKZaojKeP0.mp4 473 Transversal https://www.khanacademy.org/math/class-7-ncf/x063f95a40c290960:parallel-and-intersecting-lines/x063f95a40c290960:parallel-lines-and-transversal/v/missing-angles-with-a-transversal-indian-accent 2025-06-04T10:04:13.13703146Z Missing angles with a transversal When a third line called a transversal crosses two parallel lines, we can find the measures of angles using properties like corresponding angles, vertical angles, and supplementary angles. If we know just one of the angle measurements, these properties help us find all the missing angle measurements. Skyloom (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Missing angles with a transversal When a third line called a transversal crosses two parallel lines, we can find the measures of angles using properties like corresponding angles, vertical angles, and supplementary angles. If we know just one of the angle measurements, these properties help us find all the missing angle measurements. https://cdn.kastatic.org/ka-youtube-converted/I3mNis-YPG8.mp4/I3mNis-YPG8.mp4 137 Transversal https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-angles-between-lines/e/parallel_lines_1 2026-03-24T23:41:07.080866137Z Angle relationships with parallel lines Find missing angles given two parallel lines and a transversal. Marcia Lee exercise https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-geometry/cc-8th-angles-between-lines/e/parallel_lines_2 2026-03-31T21:47:15.031073863Z Equation practice with angles Solve for angle measures on angles formed by parallel lines and a transversal, where the angle measures are given as linear expressions. Matt Wahl exercise