List the two ways to name a line
List the two ways to name a plane
How do you name a segment?
by its two end points
How do you name a ray?
by the endpoint first then another point
List the three ways to name an angle
How do you name opposite rays?
by the common endpoint and another point on each ray
Two angles across from each other formed by intersecting lines
They are always congruent
vertical angles
Two angles that have the same vertex and share a side without overlapping
adjacent angles
Two angles that are adjacent and supplementary. They form a straight line
linear pair
Two angles with measures that sum up to 90 degrees
complementary angles
Two angles with measures that sum up to 180 degrees
supplementary