Question

20) Find the unknown angles in the following figures
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Answer 1

Step-by-step explanation:

3x+x = 180°

》4x = 180°

》x = 180÷4 = 45°

a = 180-45 = 135°

b = 45°

c = a = 135°

d = 180-(3×45) = 180-135 = 45°

e = 135°

f = d = 45°

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