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