Question

Q12.The angles of a quadrilateral are x°, (x + 20)°, (x + 40)° and (x + 60)°. Find the measure of its largest angle.

Answer 1

Answer:

x°+ (x+20) °+ (x+40) °+ (x+60) °= 360°

x°+x°+x°+x°+20°+40°+60°= 360°

4x°+ 120°= 360°

4x°= (360-120)°

4x°= 240°

x°= 240°/4

x°= 60°

Here, the largest angle is (x+60)°

Measure= (x+60) °

= (60+60) °

= 120°

Hence the measure of the largest angle in the quadrilateral is 120°

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Answer 2

Answer:

x=71.75

Step-by-step explanation:

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