equaladiral triangle: all sides are equal in sizescalene triangle: all sides are different in sizeisosceles triangle: two sides are the same length in size
A semi circle is made up of two right angles.
an acute angle is an angle anywhere between 0 and 90 degrees
Obtuse Angle
It is also a right angleSupplement = 180 - angle = 180-90 = 90 = right angle