Mastering Angles: From Basics to GCSE
Mastering Angles: From Basics to GCSE
Learning objective
Lesson duration is: 60 minItems in this lesson
Mastering Angles: From Basics to GCSE
Learning objective
Learning Objectives
At the end of the lesson, you'll identify angles, find missing angles, and understand angles in lines, triangles, quadrilaterals, and parallel lines.
What do you already know about identifying and calculating angles?
Angles on a Straight Line
Angles on a straight line add up to 180°. If given one angle, subtract it from 180° to find the missing angle.
Angles Around a Point
Angles around a point total 360°. Subtract known angles from 360° to find unknown angles.
Angles in a Triangle
The sum of angles in a triangle is always 180°. Use this to find missing angles.
Angles in a Quadrilateral
Angles in a quadrilateral add up to 360°. Use known angles to find the missing ones.
Parallel Lines and Transversals
When a transversal crosses parallel lines, alternate and corresponding angles are equal.
Supplementary and Complementary Angles
Supplementary angles add up to 180°, while complementary angles add up to 90°.
Practice Questions
Work through PDF questions at different difficulty levels to reinforce learning.
Write down 3 things you learned in this lesson.
Write down 2 things you want to know more about.
Ask 1 question about something you haven't quite understood yet.
