Question

It looks like rsu might be a right angle is it?
Please help with A and B

Answer 1

(b) NO

Explanation:

It must have the square to to be a right angle

Answer 2

A: It is obtuse

B: It is a right angle

Explanation:

A: Angle RST equals 110*, if it is greater than 90*, it is obtuse

B: Right Angles are 90*, so this is simple, you subtract RST by UST, so 110-20=90