Question

3. Three angles of a quadrilateral are equal and the measure of the fourth angle
is 120. Find the measure of each of the equal angle.
1. 100*
ii. 80
iii. 150*
iv. None of these​

Answer 1

Answer:

measure of each equal angle is 80

Step-by-step explanation:

let the three angles be x each

therefore; 3x + 120= 360

3x=240

x=80

Answer 2

Answer:

80

Step-by-step explanation:

Let the other 3 angles be x

Sum of all the angels in a quadrilateral is 360

=) x + x + x + 120

=) 3x + 120 = 360

=) 3x = 360 - 120

=) x = 240/3

=) x = 80