Answer: Properties of Angles
The sum of all the angles on one side of a straight line is always 180 degrees. For example: The sum of ∠1, ∠2, and ∠3 is 180 degrees
Step-by-step explanation: I’m smart plz give brainlest
Step-by-step explanation:
A half turn or the amount of turn about a single
point on a straight line in 180 degrees, and a quatert turn or right angle is represent by 90 degree . that's opposite angle are aqual: this result call x angle property.
