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March 07, 2017
HW: pg. 415/1-14, 18, 35
Pre-Assessment
March 07, 2017
Adjacent anglescommon vertex, common side
1
2
Vertical anglesangles formed by two intersecting lines that are
opposite one another
-vertical angles are congruent
- angles 1 and 3 are vertical angles
-angles 2 and 4 are vertical angles
1
2
4
3
Complementary anglessum is 90 degrees
1
2
Supplementary anglessum is 180 degrees
1
2
Perpendicular linestwo lines that intersect to form a right angle
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Use the lines on your paper to draw two parallel
lines. Then, draw a line that intersects them.
1
2
3 4
5
7
6
8
Find the measures of the numbered angles and
record them.
What do you notice about the angles?
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1
2
3 4
m
5
7
6
8
n
p
transversal - a line that intersects two other lines
transversal
at different points
corresponding angles - angles that lie on the
same side of the transversal and in
corresponding positions
ex: 1 and 5, 3 and 7, 2 and 6, 4 and 8
alternate interior angles - angles that lie within a
pair of lines and on opposite sides of the
transversal
ex: 3 and 6, 4 and 5
alternate exterior angles - angles that lie outside
a pair of lines and on opposite sides of the
transversal
ex: 1 and 8, 2 and 7
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1
2
3
4
5
6
7
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1)
2)
1
3
2 4
2
4
1
4) Solve for x.
3)
1
2 3
4
3
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1)
1
3
2 4
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2)
2
4
3
1
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3)
1
2 3
4
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4) Solve for x.