Question

Find the value of x in each case. Give reasons to justify your solutions!

Answer 1

Answer:

x=13°

Step-by-step explanation:

Outer angle = sum of two opposite side inner angles

So angle ECB = 3x-x =2x

2x=90°-64° =26°

x=13°

Answer 2

90 + 64 + BCE = 180 (linear pair)

BCE = 26°

3x = 26 + x (Exterior angle of a triangle is equal to sum of remote interior angles )

2x = 26

x = 13°

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