1. Angles 1 – What is an angle?
Tandi Clausen-May
Teaching Maths to Pupils with Different Learning Styles London: Paul Chapman, 2005
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2. An angle is a measure of
a n g l e
turn.
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3. A whole turn.
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4. A half turn.
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5. A quarter turn.
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6. A quarter turn is a right angle.
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7. A half turn is a straight angle.
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8. A three quarter turn is one size of reflex angle.
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9. An acute angle is less than a quarter turn.
For example, a one sixth turn is an acute angle.
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10. An obtuse angle is more than a quarter turn, but less than a half turn.
For example, a one third turn is an obtuse angle.
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11. A reflex angle is more than a half turn.
For example, a two thirds turn is a reflex angle.
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12. Angles 2 – Measuring angles
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Angles 2 – Measuring angles