Any way you like. Some angles are uniquely identified by their vertex. These can be numbered or allocated letters of the alphabet. Both Greek and Roman alphabets are used although with the Roman alphabet, upper case letters are more common.
Where the vertex does not identify the angle uniquely, it may be necessary to use the names of three vertices. For example, the angle XYZ is the angle formed by the rays XY and YZ when they meet at Y.
name all vertcal angles name all vertcal angles
90 degree angles
right angles or 90 degrees
Supplementary Angles
Complementary angles
The angles of what?
name all vertcal angles name all vertcal angles
alternate angles
90 degree angles
right angles or 90 degrees
A diagonal joining opposite angles is the principal diagonal. It may or may not bisect the angles, and that does not affect its name.
Supplementary Angles
Complementary angles
They are supplementary angles.
Right angles. Also known as 90 degree angles.
a pretty wierd shape
Supplementary angles