a. Angles in triangles

b. Area of triangles

c. Pythagoras and triangles

a. Vocabulary of circles

b. Parts of a circle

c. Making circular patterns

You can make a pair of compasses from a strip of paper. This is called a ‘circle maker’. When you have made it, experiment with your own circular patterns

a. Preparing yourself for drawing geometric constructions

Here are some of the basic rules necessary for geometric construction work. Some of them are very obvious, but train yourself to draw with good habits from the very beginning:

b. Regular polygons

Regular polygons can be made from a number of triangles

c. Area of Polygons

d. Angles of quadrilaterals

e. Making patterns with polygons

Discover which polygons fit together like tiles without leaving any spaces. Find out why some polygons fit well while others do not.

Clue: It is something to do with the inner angle i.e. the inner angle of a hexagon is 120 degrees and hexagons fit well together. Why do some shapes fit together and others don’t?