https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-transformations-intro/v/dilations-intro 2023-05-12T21:01:01.897246564Z Dilations intro Dilations are a type of non-rigid transformation. They change the size of a shape by scaling it up or down, making it bigger or smaller. Unlike rigid transformations, dilations do not keep the shape's size the same. video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Dilations intro Dilations are a type of non-rigid transformation. They change the size of a shape by scaling it up or down, making it bigger or smaller. Unlike rigid transformations, dilations do not keep the shape's size the same. https://cdn.kastatic.org/ka-youtube-converted/Kv-lyVmQ5ps.mp4/Kv-lyVmQ5ps.mp4 91 Enlargement of a shape https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-transformations-intro/e/identify-transformations 2026-04-01T15:14:56.652968034Z Identify transformations Identify the transformation (translation, rotation, reflection, or dilation) that has been applied to a figure. Lindsay exercise https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-dilations/v/dilating-points-example 2023-05-12T21:01:01.897246564Z Dilating points Dilations are a way to stretch or shrink shapes around a point called the center of dilation. The amount we stretch or shrink is called the scale factor. If the scale factor is greater than 1, the shape stretches. If it's between 0 and 1, the shape shrinks. video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Dilating points Dilations are a way to stretch or shrink shapes around a point called the center of dilation. The amount we stretch or shrink is called the scale factor. If the scale factor is greater than 1, the shape stretches. If it's between 0 and 1, the shape shrinks. https://cdn.kastatic.org/ka-youtube-converted/N0_HfmxdbCg.mp4/N0_HfmxdbCg.mp4 187 Enlargement of a shape https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-dilations/e/performing-dilations 2026-04-08T00:16:02.937952483Z Dilate points Use the interactive transformation tool to perform dilations. Tomer Gal exercise https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-dilations/v/thinking-about-dilations 2023-05-12T21:01:01.897246564Z Dilating shapes: expanding Let's dilate a rectangle around a point P using a scale factor 1 2/3. This changes the size of the rectangle while keeping its shape. Because 1 2/3 is bigger than 1, most of the points get farther from P. Point P stays in place, because a distance of 0 times any scale factor is still 0. Sal Khan video https://cdn.kastatic.org/googleusercontent/eJ0ujicJxWleCFPYnHJObwHRlmrxSg4avLuQ3GrdBJHtk4EI_DeMFHol8Dm3vW8BQeZF6FyzfMPhmWyUYGuloJ1v Dilating shapes: expanding Let's dilate a rectangle around a point P using a scale factor 1 2/3. This changes the size of the rectangle while keeping its shape. Because 1 2/3 is bigger than 1, most of the points get farther from P. Point P stays in place, because a distance of 0 times any scale factor is still 0. https://cdn.kastatic.org/ka-youtube-converted/6dyWKD_JPhI.mp4/6dyWKD_JPhI.mp4 159 Enlargement of a shape https://www.khanacademy.org/math/cc-eighth-grade-math/geometric-transformations/8th-dilations/v/scaling-down-a-triangle-by-half 2023-05-12T21:01:01.897246564Z Dilating shapes: shrinking by 1/2 Dilations are transformations that change the size of a shape and its distance from the center of dilation. When the center is the origin, we can change the distance by multiplying the x- and y-coordinates by the scale factor. That's how we find the new positions of the points after dilation. Sal Khan video https://cdn.kastatic.org/googleusercontent/61GLNOeu9Xvkw9tNtkVAYLU2KPkjoO0If5hxxOIfhkMdznWw1YFa_AL_V63rYi8-Rv4zcGHoZKhteRaqccetRVA Dilating shapes: shrinking by 1/2 Dilations are transformations that change the size of a shape and its distance from the center of dilation. When the center is the origin, we can change the distance by multiplying the x- and y-coordinates by the scale factor. That's how we find the new positions of the points after dilation. https://cdn.kastatic.org/ka-youtube-converted/qlWZJ21O63s.mp4/qlWZJ21O63s.mp4 146 Enlargement of a shape https://www.khanacademy.org/math/geometry/hs-geo-transformations/hs-geo-dilations/e/dilations 2026-04-08T00:16:02.937952483Z Dilate triangles Given a figure and a definition of a dilation, select or manually draw the image. Tomer Gal exercise