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25 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Point |
An exact location that has no size |
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Line |
A straight path that has no thickness and extends forever |
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Plane |
A flat surface that has no thickness and extends forever |
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Ray |
A part of a line that starts at one endpoint and extends forever in one direction |
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Line segment |
A part of a line made of two endpoints and all points between them |
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Congruent |
Having the same size and shape |
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Right angle |
An angle that measures 90* |
*= degrees |
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Acute angle |
An angle that measures greater than 0* and less than 90* |
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Obtuse angle |
An angle that measures greater than 90* and less than 180* |
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Straight angle |
An angle that measures exactly 180* |
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Complementary angle |
Two angles whose measures add up to 90* |
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Supplementary angle |
Two angles whose measures add up to 180* |
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Scalene triangle |
A triangle with no congruent sides |
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Isosceles triangle |
Triangle with at least two congruent sides |
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Equilateral triangle |
Triangle with three congruent sides |
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Parallelogram |
A quadrilateral with two pairs of parallel sides |
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Rectangle |
A parallelogram with four right angles |
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Rhombus |
A parallelogram with all sides congruent |
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Square |
A rectangle with four congruent sides |
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Trapezoid |
a quadrilateral wig exactly one pair of parallel sides |
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Translation |
A movement of a figure along a straight line |
Sliding |
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Reflection |
A transformation of a figure that flips the figure across a line |
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Rotation |
A transformation in which a figure is turned around a point |
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Rotational symmetry |
A figure has rotational symmetry if it can be rotated less than 360* around a central point and coincide with the original figure |
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Asymmetry |
Not identical on either side of the central line; not symmetrical |
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