Acute angle: greater than 0 but less than 90 degrees
Right angle: exactly 90 degrees
Obtuse angle: greater than 90 but less than 180 degrees
Reflex angle: greater than 180 but less than 360 degrees
Chat with our AI personalities
There are three ways to name an angle, provided there are only three points on the angle. Say the vertex is point A, and there are two rays extending. Each has another point on it, points B and C. You can name this angle BAC, CAB, or A.
by vertex or point
A parallelogram with one right angle has four of them. The name for this figure is a rectangle.
obtuse,cute,right,and straight angles
A 90 degree angle is also known as right angle. A right angle (or 90 degrees) looks like an L shape. A square or rectangle's four corners are all 90 degrees.