Perpendicular - Lines meeting at a right angle, Scalene - Triangle with all sides and angles different, Obtuse - Angle above 90 degrees, below 180 degrees, Acute - Angle below 90 degrees, Reflex - Angle above 180 degrees, less than 360, Equilateral - Triangle with equal length sides and equal angles, Isosceles - Triangle with two sides the same, Angle - Measurement of a turn, Triangle - Three-sided shape,

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