Fill in the blanks using the correct word given in brackets:
Two triangles are similar, if their corresponding angles are .......... (proportional, equal).

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Solution

$\Rightarrow$ Two triangles are similar, if their corresponding angles are $e q u a l$ .
$\Rightarrow$ As per, the definition of similar triangles, corresponding sides are in proportion and corresponding angles are congruent.
$\Rightarrow$ Also, the triangles are similar by $A A$ congruence criteria.

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(i) All circles are ......... (congruent, similar).
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(ii) All squares are __________. (similar, congruent)

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(i) All circles are ___ (conruent, similar).
(ii) All squares are ___ (similar, congruent)
(iii) All ___ triangles are similar (isoscles, equilaterals):
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Fill in the blanks using the correct word given in brackets:Two triangles are similar, if their corresponding angles are .......... (proportional, equal).

⇒ Two triangles are similar, if their corresponding angles are equal.⇒ As per, the definition of similar triangles, corresponding sides are in proportion and corresponding angles are congruent.⇒ Also, the triangles are similar by AA congruence criteria.

Fill in the blanks using the correct word given in brackets:
Two triangles are similar, if their corresponding angles are .......... (proportional, equal).