In this worksheet, we will practice identifying vertically opposite angles.

**Q1: **

If two angles are vertically opposite, are they equal in measure?

- Ayes
- Bno

**Q2: **

Given that lines and intersect at , find .

**Q3: **

In the figure, lines and intersect at . What is ?

**Q5: **

In the given diagram, and . Find the value of .

- A
- B
- C
- D
- E

**Q6: **

Knowing that , , , and , find .

**Q7: **

Two intersecting straight lines are shown. Find the values of and .

- A ,
- B ,
- C ,
- D ,
- E ,

**Q8: **

If and are vertical angles, where and , find and .

- A ,
- B ,
- C ,
- D ,
- E ,

**Q9: **

In the figure, , , , and . Find the values of and .

- A ,
- B ,
- C ,
- D ,
- E ,

**Q10: **

In the given diagram, = . Find .

**Q11: **

Calculate .

**Q12: **

What is in the following figure?

**Q13: **

Find the value of .

**Q14: **

Find the value of in the given diagram.

- A118
- B28
- C31
- D62
- E124

**Q15: **

Lines and meet at . Determine the value of .

**Q16: **

In the figure rays and meet at , and . What is ?

**Q17: **

In the given figure, if and , find .

**Q18: **

Which of the following statements is always true of vertically opposite angles?

- AVertically opposite angles are supplementary.
- BVertically opposite angles are complementary.
- CVertically opposite angles sum to .
- DVertically opposite angles are equal.
- EVertically opposite angles sum to .

**Q19: **

What is the sum of the measures of the two adjacent angles formed by a straight line and a ray?

**Q20: **

Which of these is the supplement of an acute angle?

- Aright angle
- Bacute angle
- Creflex angle
- Dobtuse angle

**Q21: **

If , then and are .

- A equal in measure
- B adjacent
- C complementary
- D supplementary

**Q22: **

Two angles are supplementary and one of them is a. What is the other?

**Q23: **

In the given diagram, is a right angle and . Work out .

**Q24: **

Find , , and .

- A , ,
- B , ,
- C , ,
- D , ,

**Q25: **

In the given diagram, is a straight line. Answer the following questions.

Form an equation that will allow you to calculate .

- A
- B
- C
- D
- E

Find the value of .

- A
- B
- C
- D
- E