Supplementary - 2 angles that make a straight angle, Reflex - An angle that measures more than 180, but less than 360 degrees, Ray - A line with a starting point and travels in one direction, Complimentary - 2 angles that make a right angle, Acute - An angle that measures less than 90 degrees. It is greater than 0., Line - A straight line that travels in 2 directions. It travels forever., Segment - A line with 2 end points., Interior angle - An angle that is found on the inside of a shape., Exterior angle - It is the angle that is on the outside of a shape when you extend one edge past the vertex (angle). It creates a supplementary angle., Triangle - A polygon with 3 edges and vertices. The vertices, or internal angles, add up to 180 degrees if you add them together., Quadrilateral - A polygon that has 4 edges and 4 vertices (angles). All the angles add up to 360 degrees., Straight - An angle that measures 180 degrees. It can be made of 2 rays travelling in opposite directions or 2 right angles coming together., Obtuse - An angle that is greater than a right angle, but smaller than a straight angle., Arc - It is the part of a circle that you find in an angle. The full arc is 360 degrees.,

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