https://www.khanacademy.org/math/class-6-tg/x47164056520f4c0a:practical-geometry/x47164056520f4c0a:construction-of-a-line-segment/v/construction-of-a-line-segment 2026-01-16T09:40:42.440263577Z Construction of a line segment In this video, we demonstrate two simple and effective methods to construct a line segment: one using a ruler and the other using a compass. With the ruler method, you’ll see how to measure and draw a straight line of the required length directly, while with the compass method, you’ll learn how to transfer a given length accurately from the ruler onto paper and then mark the endpoints to form the segment. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Construction of a line segment In this video, we demonstrate two simple and effective methods to construct a line segment: one using a ruler and the other using a compass. With the ruler method, you’ll see how to measure and draw a straight line of the required length directly, while with the compass method, you’ll learn how to transfer a given length accurately from the ruler onto paper and then mark the endpoints to form the segment. https://cdn.kastatic.org/ka-youtube-converted/6i8vRR6YQfk.mp4/6i8vRR6YQfk.mp4 222 Practical geometry https://www.khanacademy.org/math/class-6-tg/x47164056520f4c0a:practical-geometry/x47164056520f4c0a:construction-of-a-circle/v/construction-of-a-circle 2026-01-16T09:40:42.440263577Z Construction of a Circle In this video, we demonstrate how to construct a perfect circle using just a compass and a ruler. Step by step, you’ll learn how to set the compass to the desired radius, mark the center point, and carefully draw the circle with precision. Khan Academy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Construction of a Circle In this video, we demonstrate how to construct a perfect circle using just a compass and a ruler. Step by step, you’ll learn how to set the compass to the desired radius, mark the center point, and carefully draw the circle with precision. https://cdn.kastatic.org/ka-youtube-converted/bXduL83cFlY.mp4/bXduL83cFlY.mp4 109 Practical geometry https://www.khanacademy.org/math/cc-fourth-grade-math/imp-geometry-2/imp-measuring-angles/v/constructing-angles 2021-06-30T20:49:26Z Constructing angles Sal uses a protractor to create 10° and 155° angles. Sal Khan video https://cdn.kastatic.org/googleusercontent/vwVwXCac9YgvLk2XcKJT3VMMic41xJrnL_cSRhc7GfLJMxBO7vEbB34DX_PFBiUjWTi0-B7_cDHbykrQLYrmEYY Constructing angles Sal uses a protractor to create 10° and 155° angles. https://cdn.kastatic.org/ka-youtube-converted/QmfoIvgIVlE.mp4/QmfoIvgIVlE.mp4 161 Practical geometry 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 Practical geometry https://www.khanacademy.org/math/cc-fourth-grade-math/imp-geometry-2/imp-measuring-angles/e/drawing-angles 2026-04-07T23:36:17.218592739Z Draw angles Use a protractor to construct angles. Sandy Knight exercise