Question

If the measures of the three angles of a quadrilateral are 100o, 75o and 65o, find the measure of the remaining angle.

Answer 1

Answer:

Step-by-step explanation:

100+75+65+x=360

240+x=360

x=360-240

x=120°

Answer 2

Answer:

120°

Step-by-step explanation:

sum of all angles of a quadrilateral=360°

sum of angles given=100°+75°+65°=240°

measure of angle 4=360°-240°=120°

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