Maths
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acute |
An acute angle is less than 90 degrees.
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parallel |
Parallel lines never meet and are always the same distance apart.
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perpendicular |
Perpendicular lines meet at a right angle.
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reflex |
A reflex angle is between 180 and 360 degrees.
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obtuse |
An obtuse angle is more than 90 degrees.
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pi |
The diameter times 3.14 (pi) equals the cirference.
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circumference |
The circumference of the circle was large.
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diameter |
The distance from one side of the circle to the other, going through the centre.
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radius |
The distance from the side of a circle to the centre.
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circle |
The circumference of the circle was large.
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