Question

A quadrilateral has angles that measure 115, 97, and 68. What is the measure of the missing angle? Plz help me I don't know the answer!!!

A.45
B. 115
C.68
D.80

Answer 1

D. 80°

Explanation:

A quadrilateral always add up to 360°

To find the missing value we first have to add the given number up:

115 + 97 + 68 = 280°

Now we minus our value from 360° :

360° - 280° = 80°

Hope this helps!

Answer 2

Explanation:

The sides of a quadrilateral always add up to 360°.

Missing angle = 360-115-97-68 = 80°