180 degree angle
Supplementary angle
straight angle
The second angle? angle B?
90o angle
Right angle E. The vertex of any angle can also be used to name the angle.
An angle that measures 180 degrees is a straight angle, or straight line.Line.
straight angle
a line
Straight line
The last major kind of angle is the straight angle. A straight angle is an angle that measures exactly 180 degrees.
You use the right angle next to an acute angle perhaps and you see that when a angle is closer together it is an acute angle and if it is spread apart or farther apart from a right angle it is an obtuse angle. If the angle is a straight line and doesn't look bent like a right angle it is a straight angle.
a 180 degree angle
Straight angle
That is a straight angle.
Acute
A straight angle is 180 degrees, or twice the measure of a right angle. Therefore, it looks like a right angle that has been folded out into a flat line. Another way is to look at the arch of a 180 degree angle as a semicircle. Connect both ends of the semicircle and you have a straight line.
The second angle? angle B?
90o angle