What is a

TRIANGLE?

TRIANGLEA triangle is a closed figure with

three sides.

It is a polygon with three sides.

What are the basic parts of a triangle?

ΔABC

SIDE

ANGLE

SIDE

1. AB

2. BC

3. CA

VERTEX

1. A

2. B

3. C

ANGLE

1. <A or <BAC

2. <B or <ABC

3. <C or <ACB