Question

a quadrilaterals has three acute angles. if each measures 80 degere , then measures of fourth angle

Answer 1

Answer:

Step-by-step explanation:

80+80+80+fourth angle=360

240+fourth angle=360

fourth angle=360-240

fourth angle=120

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Answer 2

Answer:

120°

Step-by-step explanation:

sum of angle of a quadrilateral = 360°

Let the fourth angle be x

ATQ,

80°+80°+80°+x = 360°

240°+x = 360°

x = 360°- 240°

x= 120°