Question

Need help on geometry!!!

15. Which of the following is a straight angle ?
a)
b)
c)
d)

16. If m (angle) HOI = 21 and m (angle) GOI = 47, then what is the measure of (angle) GOH ?

Answer 1

15.

A is a straight angle because its degree is 180. Only 180 degree angles are straight angles.

16.

Answer 2

15. a, 16. ∠GOH = 26

Explanation:

15. A straight angle looks as a line.

16. ∠GOI = ∠GOH + ∠HOI

47 = ∠GOH + 21

∠GOH = 47 - 21 =26

∠GOH = 26