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Question

∠𝐴 & ∠𝐵 are complementary.  ∠𝐵 & ∠𝐶 are complementary. Prove: ∠𝐴 ≅  ∠𝐶

hintHint:

If sum of two angles is 90°, we say they are complementary angles

The correct answer is: ∠𝐴 ≅  ∠𝐶


    SOL – It is given that ∠𝐴 & ∠𝐵 are complementary
    rightwards double arrow ∠A + ∠B = 90°               ---- (1)
    Also, 𝐵 & ∠𝐶 are complementary
    rightwards double arrow ∠B + ∠C = 90°              ---- (2)
    From (1) and (2)
    We get, ∠A + ∠B = ∠B + ∠C
    rightwards double arrow ∠A = ∠C
    rightwards double arrow ∠𝐴 ≅  ∠𝐶
    Hence Proved.

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