Question

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

Answer 1

Step-by-step explanation:

Sum of angles in a quadrilateral is 360°

3 angles are equal i.e 80°

4th angle is 360-80(3) = 360-240 = 120°

Answer 2

Answer:

Step-by-step explanation:

angle 1 +angle 2+angle 3+angle4= 360

=80+80+80+angle 4=360

=240+angle 4=360

=angle4 =360-240

angle 4 = 120