Question

In below figure , angle ABC = 69° , angle ACB = 31° , find angle BDC .

Answer 1

ABC = 69° & ACB = 31°
sum of triangle is 180°
69°+31°= 100°
180°-100°=80°
BDC=80°

Answer 2

Hello mate =_=

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Solution:

∠ABC+∠ACB+∠BAC=180°

⇒69°+31°+∠BAC=180°

⇒∠BAC=180°−69°−31°=80°       ........(1)

∠BAC=∠BDC  (Angles in the same segment are equal)      .......(2)

From (1) and (2), we can say that

∠BDC=80°

hope, this will help you.

Thank you______❤

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