Transcript Perpendicular bisector ppt

Perpendicular line Construction
Perpendicular
Bisector
Aim:
Divide a line in half at 90º
P
Perpendicular Line from a
point NEAR a line
Perpendicular Line from a
point ON a line
P
Perpendicular Bisector A
Aim: Divide a line in half at 90º
Rule a line
(leaving some space on each
side of the line)
Click to start
Step1
Home
Perpendicular Bisector A
Aim: Divide a line in half at 90º
Compass
point
Set your compass to
about ¾ of the line
length
Step1
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Compass
point
Set your compass to
about ¾ of the line
length
Step1
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Compass
point
Set your compass to
about ¾ of the line
length
Step1
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Compass
point
Step1
Arc into space
each side of
the line
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Compass
point
Step1
Arc into space
each side of
the line
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Compass
point
Step1
Arc into space
each side of
the line
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Compass
point
Step1
Arc into space
each side of
the line
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Compass
point
Step1
Arc into space
each side of
the line
Home
Perpendicular Bisector B
Aim: Divide a line in half at 90º
Keep the
compass the
same
Arc into space
each side of
the line
Step1
Step2
Compass
point
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Keep the
compass the
same
Arc into space
each side of
the line
Step1
Step2
Compass
point
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Keep the
compass the
same
Arc into space
each side of
the line
Step1
Step2
Compass
point
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Arc into space
each side of
the line
Step1
Step2
Compass
point
Home
2
1
0
Perpendicular Bisector C
0
Aim: Divide a line in half at 90º
1
Use a ruler to
join this point
2
3
4
5
6
7
8
9
10
11
With this
point
12
Step1
Step2
Step3
Home
Perpendicular Bisector
Aim: Divide a line in half at 90º
Perpendicular
bisector
This should
be 90º
90º
1
1
2
2
And half
way
Step1
Step2
Step3
The End
Circumcircle
Home
Circumcircle
Do the Perpendicular Bisectors of the sides of a triangle
meet at one point?
This?
Step1
Step2
Step3
The End
Circumcircle
Home
Circumcircle
Do the Perpendicular Bisectors of the sides of a triangle
meet at one point?
OR This?
Step1
Step2
Step3
The End
Circumcircle
Home
Circumcircle
Do the Perpendicular Bisectors of the sides of a triangle
meet at one point?
Step1
Step2
Step3
The End
Circumcircle
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point near a line
P
Rule a line
Mark a point near the line (about 4cm away is fine)
Leave some space on either side of the line
Click to start
Step1
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point near a line
Compass
point
P
Set your compass to
reach over the line so
the arc will cut twice
Step1
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
Compass
point
P
Set your compass to
reach over the line so
the arc will cut twice
Step1
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
Compass
point
P
Move your compass
to one side
Step1
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
Compass
point
P
Step1
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
Compass
point
P
Step1
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
Compass
point
P
Step1
Home
Perpendicular Line from a Point B
Aim: Construct a line at 90º through a point near a line
P
Step1
Step2
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Step1
Step2
Keep the
compass the
same
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Step1
Step2
Keep the
compass the
same
Arc into space
each side of
the line
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Step1
Step2
Keep the
compass the
same
Arc into space
each side of
the line
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Step1
Step2
Arc into space
each side of
the line
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Step1
Step2
Arc into space
each side of
the line
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Step1
Step2
Arc into space
each side of
the line
Home
Perpendicular Line from a Point C
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Arc into space
each side of
the line
Step1
Step2
Keep the
compass the
same
Step3
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Arc into space
each side of
the line
Step1
Step2
Keep the
compass the
same
Step3
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Arc into space
each side of
the line
Step1
Step2
Keep the
compass the
same
Step3
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
P
Compass
point
Arc into space
each side of
the line
Step1
Step2
Step3
Home
2
1
0
Perpendicular Line from a Point D
0
Aim: Construct a line at 90º through a point near a line
1
Use a ruler to
join this point
2
3
P
4
5
6
7
8
9
10
11
With this
point
12
Step1
Step2
Step3
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point near a line
This should
be 90º
Perpendicular
Line
P
90º
Step1
Step2
Step3
The End
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point on a line
Rule a line
Mark a point on the line (not in the middle)
Leave some space on either side of the line
P
Click to start
Step1
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point on a line
Compass
point
P
Mark an arc on
both sides of
point P
Step1
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point on a line
Compass
point
P
Mark an arc on
both sides of
point P
Step1
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point on a line
Compass
point
P
Mark an arc on
both sides of
point P
Step1
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point on a line
Compass
point
P
Mark an arc on
both sides of
point P
Step1
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point on a line
Compass
point
P
Mark an arc on
both sides of
point P
Step1
Home
Perpendicular Line from a Point A
Aim: Construct a line at 90º through a point on a line
Compass
point
P
Mark an arc on
both sides of
point P
Step1
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
P
Compass
point
Set compass to ¾
the length of the arc
Step1
Step2
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
P
Compass
point
Set compass to ¾
the length of the arc
Step1
Step2
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
Keep the
compass the
same
P
Compass
point
Step1
Step2
Arc into space
each side of
the line
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
Keep the
compass the
same
P
Compass
point
Step1
Step2
Arc into space
each side of
the line
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
Keep the
compass the
same
P
Compass
point
Step1
Step2
Arc into space
each side of
the line
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
Keep the
compass the
same
P
Compass
point
Step1
Step2
Arc into space
each side of
the line
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
Keep the
compass the
same
P
Compass
point
Step1
Step2
Arc into space
each side of
the line
Home
Perpendicular Line from a Point C
Aim: Construct a line at 90º through a point on a line
Keep the
compass the
same
P
Compass
point
Arc into space
each side of
the line
Step1
Step2
Step3
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
Keep the
compass the
same
P
Compass
point
Arc into space
each side of
the line
Step1
Step2
Step3
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
Keep the
compass the
same
P
Compass
point
Arc into space
each side of
the line
Step1
Step2
Step3
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
P
Compass
point
Arc into space
each side of
the line
Step1
Step2
Step3
Home
2
1
0
Perpendicular Line from a Point D
0
Aim: Construct a line at 90º through a point on a line
1
Use a ruler to
join this point
2
3
4
5
6
7
P
8
9
10
11
With this
point
12
Step1
Step2
Step3
Home
Perpendicular Line from a Point
Aim: Construct a line at 90º through a point on a line
Perpendicular
Line
This should
be 90º
90º
P
Step1
Step2
Step3
The End
Home