Question

A quadrilateral has three acute angles measuring 80 degree each. What is the measure of fourth angle.

Answer 1

Answer:

120°

Step-by-step explanation:

We know a quadrilateral has 4 angles, and  we are given 3 of them. So, we add them up and subtract the sum from 360 ( angles in a quadrilateral ad up to 360).

80+80+80=240

360-240=120

So the last angle is 120°

Answer 2

Answer:

Let the 4th angle be x.

therefore total sum of angles in a quadrilateral is 360°

now,

80+80+80+x=360°

240+x=360°

360-240=x

120°=x

I hope it helps u

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