Angle Relationships
<b and <f are

vertical angles

alternate interior angles

 corresponding angles 

complementary angles

<e and <h are:

corresponding angles

complementary angles

 vertical angles

supplementary angles

<d and <f are:

corresponding angles

alternate interior angles

vertical angles

 same side interior angles
<e and  <f are:

complementary angles

alternate interior angles

corresponding angles

 adjacent angles
If  m<a = 120, then m<d =
If m<e = 112, the m<a =
If m<f = 70, the m<d =
If < h = 3x and m< e = 105, then x =

Label by angles: right

                           acute

                          obtuse

angles:

sides:
12
10

Label by sides: equilateral

                         isosceles

                         scalene

5

Label by angles: right

                           acute

                          obtuse

angles:

sides:
110

Label by sides: equilateral

                         isosceles

                         scalene

Label by angles: right

                           acute

                          obtuse

angles:

sides:
40

Label by sides: equilateral

                         isosceles

                         scalene

80
60

Label by angles: right

                           acute

                          obtuse

angles:

sides:

Label by sides: equilateral

                         isosceles

                         scalene

Label by angles: right

                           acute

                          obtuse

angles:

sides:

Label by sides: equilateral

                         isosceles

                         scalene

Label by angles: right

                           acute

                          obtuse

angles:

sides:

Label by sides: equilateral

                         isosceles

                         scalene

12
8
9
Find x
65
x =
57
x
Find x
40
x =
x
Find x
x
x =
130
20
Find x
35
x =
100
x
Find x
x =
155
x
60
Find x
20
x =
x
30
Find x
80
x =
x+51
60
Find x
3x-6
x =
80
130
Find x
88
86
x =
92
x
Find x
56
96
x =
120
x
Find x
87
x =
x
98
Find x
74
17x + 8
x =
110
66
Find x
85
115
x =
x
155
Find x
75
45
x =
79
68
x
Find x
156
35
x =
40
x
Find x
4x + 17
x =
x+23
80
Regular Polygon

The sum of the

 interior angles is:

 

One interior angle is:

The sum of the

exterior angles  is:

One exterior angle is:
Regular Polygon

The sum of the

 interior angles is:

 

One interior angle is:

The sum of the

exterior angles  is:

One exterior angle is:
Regular Polygon

The sum of the

 interior angles is:

 

One interior angle is:

The sum of the

exterior angles  is:

One exterior angle is:
Regular Polygon

The sum of the

 interior angles is:

 

One interior angle is:

The sum of the

exterior angles  is:

One exterior angle is:
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