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Transcript
1
Vertical Angles
2
Two angles opposite
one another at the
intersection of two lines.
Two angles that are
congruent.
A triangle that has at
least two congruent
sides
Base angles are
congruent.
A triangle that has all
three sides congruent.
All angles are
congruent.
A quadrilateral with two
pairs of parallel sides.
Opposite sides are
congruent.
A parallelogram with
four right angles.
Diagonals are
congruent.
A parallelogram with
four congruent sides.
Opposite angles are
congruent.
A quadrilateral with
exactly one pair of
parallel sides.
Sum of interior angles
is 3600.
Angles that are
nonadjacent interior
angles on opposite
sides of the transversal.
Their interiors do not
intersect.
B
A
Isosceles Triangle
AB = BC
C
F
Equilateral Triangle
E
D
R
FR GH
F
Parallelogram
GF HR
H
G
Rectangle
M
I
IM JK
IJ MK
J
K
M
N
Rhombus
O
P
Q
P
Trapezoid
S
PS QR
R
Alternate Interior Angles
1
2
Two angles whose
measures add up to
900.
Must be acute.
Two angles whose
measures add up to
1800.
At least one of the
angles must be a non–
acute angle.
An angle of a polygon
that is formed by a side
and the extension of an
adjacent side.
Two at each vertex.
Convex Polygon
A polygon such that no
side extended cuts any
other side or vertex.
Diagonals contain no
points outside the
polygon.
Perpendicular Lines
Two lines that intersect
to form a right angle.
Form an angle with
measure equal to 900.
Angle Bisectors
A ray that divides an
angle into two
congruent angles.
Angles have equal
measure.
A pair of angles in
similar locations when
two lines are
intersected by a
transversal.
May be congruent.
50 °
Complementary Angles
40 °
Supplementary Angles
135°
45 °
Exterior Angle
1
1
Corresponding Angles
2