Angles

Angles - space between 2 connecting lines

Acute - an angle that is less than 90°

Obtuse- an angle that is greater than 90°and less than 180°

right- exact 90°

straight- 180°

angle bisector-the line that divides an angle into 2 equal parts

-equal angles are not mark with the same symbol

How to make an angle bisector

Method 1

1. use compass make an arc from the vertex that crosses both arms label them X and Y.

2. make an arc from point X and Y they must be equal size.

3. draw a line from point B to the arc intersection.

Method 2

1. use protractor measure the angle D,E,F .

2. divide your measurement by two.

3. make at 54 using protactor labelled Q

y) Join point Q with a straight line.