Use rigid motions to transform figures and decide whether two figures are congruent.
Decide congruence by verifying a translation
Problem
Are these figures congruent by a translation? Compare preimage vertices \(0,~0\); \(3,~0\); \(0,~2\) with image vertices \(5,~-1\); \(8,~-1\); \(5,~1\).
One matching vertex pair can suggest a translation, but congruence requires the same rigid motion to carry the whole figure. Find a candidate displacement from corresponding points, test it independently on every remaining pair, and only then use the fact that translations preserve all lengths and angles.
Inside Gozunta
Turn the preview into practice.
More than a preview
Gozunta lets you study this problem—and more than 10,000 others.
Create targeted learning sessions, use hints, check your answer, read the walkthrough, watch the video, print the work, and track your progress.