Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
perpendicular lines part
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Agenda
1) Warm-up quiz on Socrative
2) Go over homework and warm-up
3) Notes - Slopes of parallel and perpendicular lines
4) Guided practice
5) H.W. w.s. 3.4 Practice A
# 1-15, 22-27 all
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
B
D
A
E
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
D
A
D
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Slopes of parallel and perpendicular lines
Parallel Lines - Coplanar lines that do not intersect
Perpendicular Lines - Coplanar lines that intersect to form
right angles
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
Below
September 18, 2017
Lets find the slope of these
3 lines
b II c, a b, a c
a
b
90
°
c
110
120
130
140
100
150
90
70
80
80
90
160
40
30
170
10
110
35°
60
50
20
100
70
60
180
0
120
50
130
40
140
30
150
160
20
170
10
180
0
What do you notice about the slopes of the parallel lines? ________
What about the slopes of the perpendicular lines? ______________
90
°
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
Do you remember what a rectangle is
A rectangle is a polygon that has 4 right angles.
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
Is the following shape a rectangle?
D
C
A
B
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
Slope of Line a
1/2
-3
-4/3
8
0
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Slope of line parallel to Line a
September 18, 2017
Slope of line perpendicular to line a
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
Question: One side of a rectangle has a slope of 2/3. What are the slopes of the other 3 sides?
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
Determine if the lines are parallel,
perpendicular or neither.
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
September 18, 2017
Sept 18-19 Slopes of parallel and perpendicular lines.notebook
Homework:
w.s. 3.4 Practice A
# 1- 15, 22-27 all
September 18, 2017