Question

ce, 6. Let's work out these problems. a If a°, 60°, 120°, and 130° are the angles of a quadrilateral, find aº.​

Answer 1

Answer: a=50°

Explanation:

In a quadrilateral, the total degrees of the internal angles sum to 360 degrees. Since they give us the lengths of the three sides, we can sum that up to find the missing angle degree.

`a+60+120+130=360` [combine like terms]

`a+310=360` [subtract both sides by 310]

`a=50`

Therefore, a=50°.