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Chapter12 6 ½ – Shapes

We read about plane shapes previously. It’s the time to
revise them.

A 4 sides
A B

3 corners am a 3 sides 4 corners am a
I
I

Triangle Square

B C D C
A, B, C are corners A, B, C, D are corners

AB, BC, AC are sides AB, BC, CD, DA are sides.
It’s all sides are equal.

4 corners
A B

I I
am a am a
Rectangle Circle

D C
4 sides
A, B, C, D are corners Circle has no corner.

AB, BC, CD, DA are sides. Circle has no side.
It’s opposite sides are equal.

I

am a I am
Diamond a Oval

It has 4 corners. Oval has no corner.

It has 4 sides. Oval has no side.
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Mathematics In Focus - 1