Question

27. ABC is congruent to A'B'C'. The length of side AB is (2x + 40) cm and the length of side A'B' = (3x - 10) cm. What is the measure of side AB of ABC?​
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Answer 1

Since, ABC and A'B'C' are congruent,

=> AB = A'B'

$= > 2x + 40 = 3x - 10$

$= > 3x - 2x = 40 + 10$

$= > x = 50cm$

AB = 2(50) + 40 cm

AB = 140cm

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