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maths keywords

junior cert maths

TermDefinition
acute angle an angle less than 90 degrees
obtuse angle an angle more than 90 degrees
right angle an angle of 90 degrees
reflex angle an angle that is over 180 degrees
how many degrees is a straight line 180 degrees
how many degrees is a right angle 90 degrees
how many degrees is an obtuse angle more than 90 degrees
how many degrees is an acute angle more than 90 degrees
what does parallel mean two lines opposite each other that are continuous and never meet
Perpendicular Two or more lines which meet at right angles.
Regular A shape with all sides and angles the same size.
Symmetrical A shape which has at least one line of symmetry.
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