Resize figures by a scale factor to make similar shapes.
Read this first — it covers the idea in plain language with a worked example.
A dilation multiplies the distance of each point from the center by the scale factor. Scale factor > 1 enlarges; between 0 and 1 shrinks.
Similar figures have equal corresponding angles and proportional corresponding sides. A dilation always produces a figure similar to the original.
A point is at (4, 6). Dilate by a scale factor of 1/2 centered at the origin.
A short video that walks through this topic.
Try a worksheet or work through some problems before the quiz.
A couple of questions to make sure this topic stuck. Retake as many times as you want.
Dilations & Similarity
Dilate (10, 4) by a scale factor of 1/2 from the origin. What is the image?
