Question

a quadilatrol has three acute angle each measure 80 deegres what is the measure of forth angle

Answer 1

Answer:

Answer:

120°

Given:

A Quadrilateral ABCD has three acute angles measuring 80°

To find:

The fourth angle

Solution:-

<A=80°

<B=80°

<C=80°

Let the fourth angle be x

As we know that

Sum of all the angles of a quadrilateral is 360°

Then,

<A+<B+<C+<D=360°

240°+<D=360°

<D=360°-240°

<D=120°

------------

The measure of the fourth angle is 120°

Step-by-step explanation:

Answer 2

Answer:120 Degree

Step-by-step explanation:

Sum of all the angles in a Quadrilateral=Angle A + Angle + Angle C+ Angle D=360 Degree(quadrilateral has four sides)

Let the Forth angle to be x,

80+80+80+x=360 Degree

240+x=360 Degree

x=360-240=120 Degree

x= 120 Degree

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