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20 Cards in this Set
- Front
- Back
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Congruent
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Having exactly the same size and shape.
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Diameter
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A line segment that passes through the center of a circle and has endpoints on the circle. Twice the radius
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Line
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A set of points that extends without end in two opposite directions
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Line Segment
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Part of a line with a point at each end.
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Midpoint
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A point that is equal distance from the two endpoints of a line segment.
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Parallel
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Lines, rays or line segments that are the same distance apart and never meet.
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Perpendicular
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Lines, rays or line segments that meet at right angles.
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Radius
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A line segment from the center of a circle to any point on the circle. One half the diameter.
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Ray
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A part of a line that has one endpoint and extends without end in one direction.
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Similar
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Exactly the same shape but not the same size.
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Acute Angle
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An angle whose measure is less than 90 degrees.
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Acute Triangle
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A triangle with 3 acute angles.
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Equilateral Triangle
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A triangle with three 60 degree angles and 3 equal sides.
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Isosceles Triangle
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A triangle with at least two congruent sides.
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Obtuse angle
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An angle thta measures between 90 and 180 degrees.
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Obtuse Triangle
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A triangle with one obtuse angle.
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Reflex Angle
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An angle that measure more than 180 degrees.
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Right Angle
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An angle whose measure is exactly 90 degrees.
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Right Triangle
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A triangle with one right angle.
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Scalene Triangle
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A triangle with no congruent sides.
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