Question

△PQR≅△ABC. If PQ=5 cm,∠Q=40° and ∠P-80° what is the measure of ∠C?



80°

60°

40°

90°

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Answer 1

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60°

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Answer 2

Step-by-step explanation:

In △PQR using angle sum property of triangle

∠P+∠Q+∠R=180

80 +40 +∠R=180

⇒∠R=180-120 =60

Now △PQR≅△ABC

As corresponding parts of congruent triangle are equal

∴AB=PQ=5cm and ∠C=60