Measuring Angles in 2D Figures

Q.

The point where two rays meet to form an angle is called the

1. vertex

2. terminal point

3. side

4. arm

Q.

Using only a ruler, make an acute angle, an obtuse angle and a reflex angle in your notebook. Write their names.

Q. Which of the following is/are the pairs of adjacent angles in the figure shown?

1. $\angle AOB\text{and}\angle COD$
2. $\angle AOD\text{and}\angle COD$
3. $\angle BOC\text{and}\angle COD$
4. $\angle AOC\text{and}\angle AOB$

Q. Which of the following statements about an angle is correct?

1. An angle is used to measure how far apart two polygons are from each other.
2. An angle is made up of two rays starting from a common point.
3. An angle cannot be measured.

Q.

Look at the angles drawn and classify them as acute, obtuse or right.