Question

The four angels of a pentagon are 40,75,125and 135.The measure of fifth angle will be
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Answer 1

Answer:

Angle 1 = 40 °

Angle 2 = 75 °

Angle 3 = 125 °

Angle 4 = 135 °

In a pentagon,

Angle 1 + Angle 2 +Angle 3 +Angle 4 +Angle 5 = (n-2 )×180°

40 +75 +125 +135+Angle 5 =(5-2)×180

375+Angle 5 = 3×180

375 +Angle 5 = 540

Angle 5 = 540 -375

=165°

ans.

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