Right angle - 90 degree angle, Obtuse angle - greater than 90 degrees, Acute angle - less than 90 degrees, 180 degree angle - Straight line, Reflex angle - greater than 180 degrees, Complementary - Angles that add to 90 degrees, Suppplementary - Angles that add to 180 degrees, Two lines intersect - Vertically opposite angles, Two lines never meet - parallel lines, Lines intersect at 90 degrees - perpendicular lines, Transversals - Lines cut at least 2 other lines,

Angles

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