https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-bisectors/v/constructing-a-perpendicular-bisector-using-a-compass-and-straightedge 2021-02-16T16:08:13Z Geometric constructions: perpendicular bisector Sal constructs a perpendicular bisector to a given line segment using compass and straightedge. Sal Khan video https://cdn.kastatic.org/googleusercontent/Bjfj2eM1niFGunZY-P1N3CxVS8HNTbRplbz-yjCosmkaJsSoTSa0ZldRXgPIS1fvnMhp540o38QZpOuL7RA2JUg Geometric constructions: perpendicular bisector Sal constructs a perpendicular bisector to a given line segment using compass and straightedge. https://cdn.kastatic.org/ka-youtube-converted/WR2R_wrdEVY.mp4/WR2R_wrdEVY.mp4 86 Geometric Constructions https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-bisectors/v/constructing-an-angle-bisector-using-a-compass-and-straightedge 2021-02-16T16:08:13Z Geometric constructions: angle bisector Sal constructs a line that bisects a given angle using compass and straightedge. Sal Khan video https://cdn.kastatic.org/googleusercontent/k0ShVOtWKk8bpYbdkwztYCR_s299KJ7K2IC6cbiEn3WNlW88vonoAm9h67WtxvGHEFGXes-Y5in6opSJHr702xMy Geometric constructions: angle bisector Sal constructs a line that bisects a given angle using compass and straightedge. https://cdn.kastatic.org/ka-youtube-converted/KNr52iFk7n4.mp4/KNr52iFk7n4.mp4 137 Geometric Constructions https://www.khanacademy.org/math/class-9-tg/x06d55bfa213a79fd:geometrical-constructions/x06d55bfa213a79fd:basic-constructions/v/standard-angle-constructions-using-compass 2025-07-15T09:29:44.949540722Z Standard Angle Constructions using Compass Want to construct angles like 60°, 90°, or 120° using just a compass — and actually understand why it works? This hands-on video walks you through each construction step by step, making it easy to follow along as you watch. More than just drawing, it builds the intuition behind each angle so you truly grasp the “why” behind the method. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Standard Angle Constructions using Compass Want to construct angles like 60°, 90°, or 120° using just a compass — and actually understand why it works? This hands-on video walks you through each construction step by step, making it easy to follow along as you watch. More than just drawing, it builds the intuition behind each angle so you truly grasp the “why” behind the method. https://cdn.kastatic.org/ka-youtube-converted/N-Z2Kt5GSRA.mp4/N-Z2Kt5GSRA.mp4 400 Geometric Constructions https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-bisectors/v/geometric-constructions-congruent-angles 2021-02-07T17:14:00Z Geometric constructions: congruent angles We can construct congruent angles with a compass and straight edge. They're congruent corresponding angles of congruent triangles. video https://cdn.kastatic.org/googleusercontent/sLWZhppm_G2xe_FOLTZn7KFumbW3b8eGxi2SOOvcpAVmWimENlNtT_MDWYnAhZWzPJHd70FWxrMG66cyDh9-2NWVrw Geometric constructions: congruent angles We can construct congruent angles with a compass and straight edge. They're congruent corresponding angles of congruent triangles. https://cdn.kastatic.org/ka-youtube-converted/D9UXfNc1ePs.mp4/D9UXfNc1ePs.mp4 249 Geometric Constructions https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-bisectors/v/constructing-a-perpendicular-line-using-a-compass-and-straightedge 2021-02-16T16:08:14Z Geometric constructions: perpendicular line through a point on the line Sal constructs a line perpendicular to a given line through a point on the line using compass and straightedge. Sal Khan video https://cdn.kastatic.org/googleusercontent/NgTArIZqt6AglZ5SQuuNIwywyAkEg_zZJqGW0Xai67WihDqRYr00cfCae-2SOniO0jK4s-vt5hZ6O0Zg66frCEsD Geometric constructions: perpendicular line through a point on the line Sal constructs a line perpendicular to a given line through a point on the line using compass and straightedge. https://cdn.kastatic.org/ka-youtube-converted/nM-O8llUdwg.mp4/nM-O8llUdwg.mp4 72 Geometric Constructions https://www.khanacademy.org/math/geometry/hs-geo-congruence/hs-geo-bisectors/v/geometric-constructions-perpendicular-line-through-a-point-not-on-the-line 2021-02-07T17:14:00Z Geometric constructions: perpendicular line through a point not on the line We can construct a perpendicular line through a point off the line. The lines must be perpendicular because a rhombus's diagonals are perpendicular. video https://cdn.kastatic.org/googleusercontent/mKYXjju71wAr3Vy6ys_yUJ5S2oSmi__H48LacOKR1o_m-z3slNSRZnh3wgHGwIef_hRrwBRCsCnImgupvwZPCUYOrQ Geometric constructions: perpendicular line through a point not on the line We can construct a perpendicular line through a point off the line. The lines must be perpendicular because a rhombus's diagonals are perpendicular. https://cdn.kastatic.org/ka-youtube-converted/-ltjjKgGY7o.mp4/-ltjjKgGY7o.mp4 162 Geometric Constructions