https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/v/reflecting-points 2023-05-12T21:01:01.897246564Z Reflecting points We can plot points after reflecting them across a line, like the x-axis or y-axis. Reflections create mirror images of points, keeping the same distance from the line. When we reflect across the y-axis, the image point is the same height, but has the opposite position from left to right.  video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Reflecting points We can plot points after reflecting them across a line, like the x-axis or y-axis. Reflections create mirror images of points, keeping the same distance from the line. When we reflect across the y-axis, the image point is the same height, but has the opposite position from left to right.  https://cdn.kastatic.org/ka-youtube-converted/F77xiSlCehI.mp4/F77xiSlCehI.mp4 225 Reflection of a shape https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/a/reflecting-shapes 2022-05-10T22:02:00.85367701Z Reflecting shapes Learn how to find the image of a given reflection. article https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/e/performing-reflections-on-the-coordinate-plane 2026-04-08T00:36:09.500768563Z Reflect points Given a point and a definition of a horizontal or vertical reflection, plot the reflection on a coordinate plane or identify the coordinates of the reflected point. Tomer Gal exercise https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/v/reflecting-shapes 2023-05-12T21:01:01.897246564Z Reflecting shapes Let's reflect a quadrilateral across the x-axis. To do this, we find new points (A', B', C', D') by keeping the same x-coordinates and changing the y-coordinates to their opposite signs. This creates a flipped image of the original quadrilateral. video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Reflecting shapes Let's reflect a quadrilateral across the x-axis. To do this, we find new points (A', B', C', D') by keeping the same x-coordinates and changing the y-coordinates to their opposite signs. This creates a flipped image of the original quadrilateral. https://cdn.kastatic.org/ka-youtube-converted/lfBDOQddTD0.mp4/lfBDOQddTD0.mp4 158 Reflection of a shape https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/v/reflecting-segments-over-line 2021-02-16T16:08:12Z Reflecting shapes: diagonal line of reflection Sal is given two line segments on the coordinate plane and the definition of a reflection, and he draws the image of the segments under that reflection. video https://cdn.kastatic.org/googleusercontent/-4LpTVmCcEFPCy-yfLzYF3t6Sby44C9Yg8QiO6NQrqpqOdXcfJ8Qhn9fpqyju_cljViWhH0VNAljRY0QrET3aSA Reflecting shapes: diagonal line of reflection Sal is given two line segments on the coordinate plane and the definition of a reflection, and he draws the image of the segments under that reflection. https://cdn.kastatic.org/ka-youtube-converted/kj3ZfOQGKdE.mp4/kj3ZfOQGKdE.mp4 439 Reflection of a shape https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/v/determining-reflections 2023-05-12T21:01:01.897246564Z Determining reflections A line of reflection is an imaginary line that flips one shape onto another. We find this line by finding the halfway points between matching points on the source and image triangles. All of the halfway points are on the line. Once we find that line, it shows how one triangle reflects onto the other. video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Determining reflections A line of reflection is an imaginary line that flips one shape onto another. We find this line by finding the halfway points between matching points on the source and image triangles. All of the halfway points are on the line. Once we find that line, it shows how one triangle reflects onto the other. https://cdn.kastatic.org/ka-youtube-converted/435Ipnmp7bA.mp4/435Ipnmp7bA.mp4 100 Reflection of a shape https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/e/determine-reflections 2025-11-21T17:50:47.901900147Z Determine reflections Given a shape and its image under a horizontal or vertical reflection, determine the line of reflection. Tomer Gal exercise https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/v/points-on-line-of-reflection 2021-02-16T16:08:13Z Determining reflections (advanced) Sal is given two line segments on the coordinate plane, and determines the reflection that maps one of them into the other. video https://cdn.kastatic.org/googleusercontent/TEjpcvNAtGIptU3ffGA2JKOun1EhdEtzhVJREkmKAWYSmy2PufIfV417dBdsIOZifYr7XjK2WAuHMa1wNYAGwnE Determining reflections (advanced) Sal is given two line segments on the coordinate plane, and determines the reflection that maps one of them into the other. https://cdn.kastatic.org/ka-youtube-converted/63mWxNXQQAk.mp4/63mWxNXQQAk.mp4 341 Reflection of a shape https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-reflections/e/defining-reflections 2026-04-07T23:17:37.123726494Z Determine reflections (advanced) Given two figures on the coordinate plane, draw the line of reflection that takes one figure to another. Tomer Gal exercise