Acute angles
regular polygons
Equiangular Polygon...
If 2 of its interior each measure 30 degrees then it is an isosceles triangle
right angles
They are called congruent angles.
rectangle.
Square.
4 right angles, by definition, are four angles of the same measure, and therefore must be congruent angles.
Equaliteral Triangle
Equilateral
A contraction
An angle that is greater than 180 degrees is called a reflex angle. Reflex angles measure between 180 degrees and 360 degrees. They represent the larger rotation between two rays or lines, as opposed to the smaller angle formed.