Question

Two angles of a quadrilateral measure 55 and 105°.The
other two angles are equal. Find the measure of each of these equal angles.​

Answer 1

Angle sum of a quadrilateral: 360

let the two equal angles be X

therefore

55° + 105° +X + X = 360°

160° + 2X = 360°

2X =360° - 160°

X = 200 / 2

X = 100

therefore measure of each equal angle is 100

good day!!

Answer 2

Answer:

Sum of angles of a triangle = 360 degrees

Given angles 75° and 125°

Let one of the other angle = x

so, the fourth angle is also x

so, 75°+125°+x+x= 360°

so, 200°+ 2x= 360°

so, 2x= 160°

so, x= 80

Step-by-step explanation: