Class 9 Mathematics · Chapter 9 · Test 1
Similar Polygons and Triangles
40 MCQs
40 questions · 35 min · 40 marks
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Sample questions
The first 5 of 40. Try each one, then tap to see the answer.
Question 1
Similar figures have:
- Athe same size but different shapes
- Bthe same shape but not necessarily the same size
- Cdifferent shapes and sizes
- Dequal areas always
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Answer: B
Similar figures have the same shape but not necessarily the same size.
Question 2
Two polygons are similar if:
- Atheir areas are equal
- Btheir perimeters are equal
- Conly their angles are equal
- Dcorresponding angles are equal and corresponding sides are proportional
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Answer: D
Both conditions are needed for similarity.
Question 3
The symbol of similarity is:
- A~
- B≅
- C∥
- D⊥
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Answer: A
The symbol ~ means is similar to.
Question 4
Which of the following are always similar?
- Atwo isosceles triangles
- Btwo right triangles
- Ctwo equilateral triangles
- Dtwo scalene triangles
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Answer: C
All equilateral triangles have angles of 60°.
Question 5
If two angles of one triangle are equal to two angles of another triangle then:
- Athe triangles are congruent only
- Bthe triangles are similar
- Cthe triangles are not related
- Dthe third angles differ
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Answer: B
The third angles are also equal so the triangles are similar.
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