Math Vocabulary List
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Acute Angle | An angle with a measure greater than 0 and less than 90.
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| Acute Triangle | A triangle having three acute angles.
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| Adjacent Angles | Angles that have the same vertex,share a common side and don't overlap.
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| Base | In a power, the number used as a factor.
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| Complementary Angles | Two angles are complementary if the sum of their measure is 90.
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| Congruent | Having the same measure.
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| Cross Section | The cross section of a solid and a plane.
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| Edge | The line segment where two faces of a polyhedron intersect.
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| Equilateral Triangle | A triangle having three congruent sides.
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| Face | A flat surface of a polyhedron.
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| Isosceles Triangle | A triangle having at least two congruent sides.
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| Obtuse Angle | Any angle that measures greater than 90 less than 180.
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| Obtuse Triangle | A triangle having one obtuse angle.
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| Polyhedron | A three-dimensional figure with faces that are polygons.
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| Prism | A polyhedron with two parallel congruent faces called bases.
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| Pyrimid | A polyhedron with one base that is a polygon and three or more triangular faces that meet at a common vertex.
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| Right Angle | An angle that measures exactly 90.
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| Right Triangle | A triangle having one right angle.
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| Scalene Triangle | A triangle having no congruent sides.
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| Straight Angle | An angle that measures exactly 180.
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| Supplementary Angles | Two angles are supplementary if their sum measures 180.
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| Triangle | A figure with three sides and three angles.
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| Vertex | A vertex of an angle is the common endpoint of the rays forming the angle.
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| Vertical angles | Opposite angles formed by the intersection of two lines.
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