Geometry Mixed Review
Attempt these without checking earlier lessons.
Questions
- Classify 142°.
- Find x if x+68°=180°.
- One angle at an intersection is 57°. Find the adjacent angle.
- A co-interior angle is 103°. Find its partner.
- Find the third angle of a triangle with angles 46° and 79°.
- Find the missing angle of a quadrilateral with 82°, 96° and 105°.
- Find the interior-angle sum of a decagon.
- Find one exterior angle of a regular 12-sided polygon.
- State the relationship between radius and diameter.
- One cyclic quadrilateral angle is 116°. Find the opposite angle.
- Find the reverse bearing of 078°.
- Find the scale factor from 8 cm to 20 cm.
- State the rotational order of a regular pentagon.
✅ Check Your Work
Show answers and working
- Obtuse.
- 112°.
- 123°.
- 77°.
- 55°.
- 77°.
- 1440°.
- 30°.
- d=2r.
- 64°.
- 258°.
- 2.5.
- 5.
Reflection
- Which rules can you recall without looking?
- Can you give a reason for each angle answer?
- Can you draw diagrams before calculating?
Revision Guidance and Readiness
- Attempt the questions without notes first.
- Use the answers or worked solutions to identify the exact step that needs attention.
- Return to the relevant lesson, then retry missed questions.
- You are ready to move on when you can explain your method and check your result independently.