Grade 8 · Geometry
Similarity
100 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.
What the problems look like
A few statements from this skill. Answers, hints and worked solutions live in the practice session.
Warm-up
A triangle has sides of length 4 cm, 8 cm, and 9 cm. A similar triangle is created by enlarging it with a scale factor of 2. What is the perimeter of the new triangle in centimeters?
Warm-up
A triangle has sides of length 5 cm, 8 cm, and 8 cm. A similar triangle is created by enlarging it with a scale factor of 4. What is the perimeter of the new triangle in centimeters?
Warm-up
A triangle has sides of length 7 cm, 4 cm, and 9 cm. A similar triangle is created by enlarging it with a scale factor of 2. What is the perimeter of the new triangle in centimeters?
Problems shown under their original terms: Generated (template, solver-computed).
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