Grade 10 · Geometry
Congruence & similarity
603 problems in this skill, each with a solver-verified answer key. Answers are checked the moment you submit — with a hint if you want one and a worked solution afterwards.
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A few statements from this skill. Answers, hints and worked solutions live in the practice session.
Warm-up
Find the scale factor k of the similarity transformation that maps triangle ABC to triangle A'B'C' where AB = 6 and A'B' = 12.
Warm-up
Triangle ABC is similar to triangle DEF. If AB = 4 and DE = 12, what is the scale factor k of the similarity?
Warm-up
Two triangles are similar. Triangle PQR has side lengths 4, 5, 6. Triangle XYZ is similar with scale factor 3/2. Find the length of side XZ corresponding to side PQ.
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