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You use angle facts to work out missing angles in lines, around a point and inside triangles. This helps you solve geometry questions quickly and check whether your answer is reasonable.
You should be comfortable with recognising acute, right, obtuse and straight angles. You also need to know basic subtraction and addition facts.
Not confident yet? Work through Perimeter & area first.
One question from this skill's own question bank, shown with its full working.
The angles in a triangle add up to how many degrees?
Working: The interior angles of any triangle sum to 180°.
This topic normally appears in Junior High School geometry work in Basic 7 to Basic 9. It also supports the type of angle questions that can appear in BECE preparation.
Curriculum notes are a general guide to where this work normally sits. Always check the syllabus your school or examination body is currently using.
Other JHS Mensuration & Geometry skills in Maths, at the same point in the course.
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6 questions with a worked answer after every attempt, and a SmartScore that tracks how close you are to mastery.