Page 40 - Key Stage 3 Geometry

stages. Nonetheless it is a worthwhile exercise and is

excellent practise in the use of your compasses. We
shall draw two circles, in the first circle we shall find

the separation for the points of the compasses. In the

second circle we shall mark out the length of the sides.

Do the following:

1. Using your compasses, draw two circles of
radius 6 cm separated by 2 cm.

2. In the first circle draw a vertical diameter.

3. Place the edge either of your set squares along
this diameter with the right angle at the centre.

4. Draw a horizontal radius from the centre to the
west point.

5. Draw a diameter from east point to the centre,

you now have a horizontal diameter.
6. Reduce the angle in your compasses by 1 .5 cm.

7. Place the compasses point on the east point and

draw an arc in the right-hand side of the circle.
8. Place the compasses point on the centre and

draw another arc in the right-hand side.

9. Draw a line between the points where the arcs
intersect.

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