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 angles.
a. 70
b. 100
c 80
D 50​

Answer 1

c)80°

Let x be one the three equal angles.

Sum of all the angles of a quadrilateral = 360o

⇒ x + x + x + 120o = 360o

⇒ 3x = 360o -120o

⇒ 3x = 240o

⇒ x = 80o

Thus, the measure of each of the equal angle is 80o.

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$itzDopeGirl❣$

Answer 2

Answer:

answer is 80°

Step-by-step explanation:

$3x + 120 = 360$

$3x = 240$

$x = 80$