Unit 2 pt 2 Flashcards
1
Q
Complementary angles
A
two angles whose measures have the sum of 90 degrees (DEF)
2
Q
Supplementary angles
A
two angles whose measures have the sum of 180 degrees (DEF)
3
Q
Vertical angles
A
-two angles such that the sides of one angle are opposite rays to the sides of the other angle.
-when two lines intersect, they form two pairs of vertical angles.
4
Q
Vertical angle theroem
A
Vertical angles are congruent
5
Q
Vertical angle theorem
A
Vertical angles are congruent
6
Q
Perpendicular lines
A
Two lines that intersect to form right (90 degree) angles
6
Q
Perpendicular lines theorem
A
If two lines are perpendicular, then they form congruent, adjacent angles.
7
Q
Perpendicular lines theorem converse
A
If two lines form congruent adjacent angles, then the lines are perpendicular
