All lessonsSource
📐 Mathematics 12 minLesson 12 of 50
Angle rules
Use the angle facts to find any missing angle in a diagram.
What you will learn
- Angles on a straight line add to 180 degrees.
- Angles around a point add to 360 degrees.
- Alternate angles between parallel lines are equal.
GCSE Maths - Alternate, Corresponding and Allied Angles - Parallel Lines Angle Rules (2026/27 exams)
Cognito · plays in StudyAI
Watch once, then work through the practice sheet.
Practice sheets
3 printable PDFs1
Recall drill
5 questions · write-in answer lines
2
Apply it
4 questions · write-in answer lines
3
Test yourself
4 questions · write-in answer lines
Interactive quiz
Question 1 of 2Angles on a straight line sum to…
