Class 10 · Mathematics · Mathematics

6. Triangles

Try question 1

Two triangles are similar if their corresponding angles are

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Answer and explanation

Answer: B. equal

Equal corresponding angles (AAA) make two triangles similar.

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Try question 2

The Basic Proportionality Theorem is also called

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Answer and explanation

Answer: C. Thales theorem

It is credited to the Greek mathematician Thales.

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Try question 3

In ΔABC, DE ∥ BC with AD = 2 cm, DB = 3 cm and AE = 4 cm. Then EC is

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Answer and explanation

Answer: B. 6 cm

By the Basic Proportionality Theorem AD/DB = AE/EC, so 2/3 = 4/EC and EC = 6 cm.

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