Question

b) For the paper plane in Fig. 4. prove that the two wings are congruent

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Answer 1

In tri.ACB and tri.ADE

AC = AD

BC =DE

angle ACB = angle ADE =90°

therefore by SAS (RHS)

triACD congurent to tri ADE

Answer 2

Given : paper plane in Fig. 4

To Find : prove that the two wings are congruent. ​

Solution:

Two winds are

ACB  and  ADE

ACB and ADE are in triangular shape

ΔACB  & ΔADE

AC = DE   Given

∠ACB = ∠ADE   = 90°   ( given )

CB = DE    Given

=> ΔACB ≅  ΔADE   ( SAS)

Hence Two wings are congruent

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