how to …… bisect an angle.. what? ‘bisect’ means to cut exactly in half. if you bisect an...
TRANSCRIPT
How to ……
Bisect an angle.
What?
• ‘Bisect’ means to cut exactly in half.
• If you bisect an angle, you get two equal angles e.g. if you bisect a 60° angle you get two 30° angles.
• Any point on the angle bisector will be equidistant from the lines which make the original angle.
I was okay until the last bit.
Angle bisector
Equal lengths
How to bisect an angle
Set your compasses to a reasonable length
Place the point on the vertex of the angle
And draw 2 arcs.
Like this….
Now place the compass pointwhere one of the arcs cross
the line
And draw another arc ‘inside’ the angle
Should look similar to this
Now repeat on the other side
Draw a line from where the arcscross to the vertex of the angle
You have bisected the angle
Leave your arcs in situ