A straight angle is equal to ___ right angle(s).
2
1
4
3
A straight angle measures 180∘
180∘=2×90∘
⇒ A straight angle is equal to 2 right angles.
A whole angle is equal to ___ right angles
The number of right angles in a straight angle is ______ and in a complete angle is ________.
What is the measure of (i) a right angle? (ii) a straight angle?
The angle formed when a straight angle is bisected equal to: