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acute : An acute angle is less than 90°.

add : Addition is the sum of two numbers or quantities.

Keyword(s): additiontotalsum

adjacent : Adjacent sides are next to each other and are joined by a common vertex.

algebra : Algebra is the branch of mathematics where symbols or letters are used to represent numbers.

amount : Amount means total.

angle : An angle is formed when two straight lines cross or meet each other at a point. The size of an angle is measured by the amount one line has been turned in relation to the other.

Keyword(s): reflexrightobtuseacute

angles at a point : Angles at a point add up to 360°

angles on a straight line : Angles on a straight line add up to 180°

approximate : An approximate value is a value that is close to the actual value of a number.

Keyword(s): approximately

approximately equal to : » Approximately equal to means almost the same size.

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