1
two angles whose sum is 180 degrees.
2
two angles.whose sum is 90 degrees.
3
a device for measuring angles.
4
angles formed on opposite sides of a transversal between parallel lines
5
two angles that share both a side and a vertex.
6
a unit of measure of an angle
7
an angle whose measure is greater than 90 degrees.
8
a positive angle measuring less than 90 degrees.
9
angles greater than 180° but less than 360°
10
an angle whose measure is 90 degrees.
11
the union of two rays with a common endpoint, called the vertex.
