Slope of Perpendicular line Segments

Name _________________


Plot the following coordinates. 

1.  A(–6, –1) B(6, 5) C(–4, 5) D(1, –5)

[image]

Angle between line segments: _______°

 

SlopeAB =          SlopeCD =                SlopeAB × SlopeCD =

 

2.  A(–6, –1) B(3, 5) C (–6, 5) D(–2, –1)

[image]

Angle between line segments: _______°

 

SlopeAB =          SlopeCD =                SlopeAB × SlopeCD =

 

3.  A(–4, –2) B(3, 5) C(–6, 5) D(2, –3)

[image]

Angle between line segments: _______°

 

SlopeAB =          SlopeCD =                SlopeAB × SlopeCD =

 

 

4.  A(1, –3) B(3, 5) C(–6, –1) D(2, –3)

[image]

Angle between line segments: _______°

 

SlopeAB =          SlopeCD =                SlopeAB × SlopeCD =

 

 

5.  A(1, –3) B(1, 5) C(–6, –2) D(4, –2)

[image]

Angle between line segments: _______°

 

SlopeAB =          SlopeCD =                SlopeAB × SlopeCD =

 

6.  A(2, –6) B(1, 5) C(–6, –2) D(4, –1)

[image]

Angle between line segments: _______°

 

SlopeAB =          SlopeCD =                SlopeAB × SlopeCD =

 

7.  What do you notice about the slopes of line segments which are perpendicular?  

 

________________________________________________________

 

8. Without graphing, is ?

                 A(0, –5) B(–3, 6) C(–4, –3) D(4, –1)

 

Slope of Perpendicular line Segments

Plot the following coordinates.  Measure the angle between the line segments. 

1.  A(–6, –1) B(6, 5) C(–4, 5) D(1, –5)

2.  A(–6, –1) B(3, 5) C (–6, 5) D(–2, –1)

3.  A(–4, –2) B(3, 5) C(–6, 5) D(2, –3)

4.  A(1, –3) B(3, 5) C(–6, –1) D(2, –3)

5.  A(1, –3) B(1, 5) C(–6, –2) D(4, –2)

 

Not perpendicular

 

6.  A(2, –6) B(1, 5) C(–6, –2) D(4, –1)

8.  A(0, –5) B(–3, 6) C(–4, –3) D(4, –1)