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