The three interior angles of any triangle add up to 180°.
If we know two, we can find the third.
Examples
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Let's try this out in the questions that follow.
In this worksheet, students will find the third angle of a triangle given the other two angles.
Key stage: KS 3
Year: Year 7 Maths worksheets
Curriculum topic: Geometry and Measures
Curriculum subtopic: Derive/Use the Sum of Angles for Deduction
Popular topics: Angles worksheets
Difficulty level:
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