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Acute angles
Complementary
angles
Measure of an angle that
is 90
Triangle
Adjacent Angles
H
Supplementary
F
Obtuse Angles
Zig Zag pattern
E
Reflex angle
Two angles whose
measures add to 90
Right angles
Scalene
Angle
Transversal
D
Two congruent angles on the same side of the
transversal
Corresponding
Y
Similar
Reflection
Two sets of lines that will
never intersect
Dilation
Triangle Sum
Theorem
C
Parallel lines
Perpendicular Lines
a2 + b2 = c2
Congruent
and less than 180
Straight
angle
Have the same size and shape
Congruent angles inside a set of parallel lines
cut by a transversal
G
Z
A line that cuts across
parallel lines
Alternate Interior angles
Nonadjacent angles
formed by 2
intersecting lines
A
Two lines that intersect and Vertical Angles
make 90 angles
Angles that have a common vertex and The measure of an angle that is greater
Measure of an angle which is greater than 90
a common side
than 0 and less than 90