Question

PLEASE HELP IMMEDIATELY ​

Answer 1

Step-by-step explanation:

Q11) given: angle ACD=123°

angle A=56°

angle B =x

To prove : value of x

Proof: angle ACD+angle ACB =180°( linear pair)

123+angle ACB=180°

Angle ACB = 57°

In triangle ABC

Angle (A+B+C) = 180° ( angle sum property)

56+x+57= 180

x = 180-113

x =67°

Ans x = 67°

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