Angles that measure between 90 and 180 are called obtuse angles. Those below 90 are called acute angles, and those between 180 and 360 are called reflex angles.
Angles that are 180 degrees (θ = 180°) are known as straight angles. • Angles between 180 and 360 degrees (180°< θ < 360°) are called reflex angles.
Supplementary angles add up to 180 degrees
Sum of adjacent angles on a straight line.
How can a circle measure 180 degrees? Circles don't have any angles!
Angles greater than 90 but less than 180 degrees are obtuse angles Angles greater than 180 but less than 360 degrees are reflex angles
With a protractor
They are supplimentary angles.
supplementary angles.
If they're less than 180 degrees, they're obtuse angles. If more than 180 degrees, they're reflex angles. (Exactly 180 degrees is a 'straight' angle.)
The three interior angles add up to 180°. (180° is the measure of a triangle)
A right angle measures 90°. There are three angles that have greater measurement than a right angle. They are:Obtuse angles - They are angles that measure between 90° and 180°, but not exactly 90° and 180°. In other words, they measure less than 180° but greater than 90°.Straight angle - It is an angle that measure exactly 180°.Reflex angles - They are angles that measure greater than 180°.