terms for geometry
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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| Triangle | Polygon with 3 sides, 3 angles, and 3 vertices.
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| Equilateral Triangle | All 3 sides are congruent.
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| Scalene Triangle | None of the 3 sides are congruent.
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| Isosceles Triangle | At least 2 sides are congruent.
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| Equiangular Angles | All 3 angles are congruent.
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| Right Angle | One right angle(90 degrees)
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| Acute Angle | All angles are acute(less than 90 degrees)
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| Obtuse Angle | One obtuse angle(more than 90 degrees)
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| Point | a geometric object that has no dimensions, only a location.
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| Plane | Flat surface that extends endlessly in all directions; Two dimensional.
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| Space | The set of all points; 3 dimensional.
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| Line | A set of points along a straight path having no endpoints.
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| Line Segment | Part of a line that has two endpoints.
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| Ray | Part of a line hat has only 1 endpoint.
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| Angle | Two rays joined with a common endpoint; the two rays are called the sides of an angle.
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| Vertex | The common endpoint of an angle.
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| Intersecting lines | Lines that have just one point in common.
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| Parallel lines | Lines that never intersect.
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| Perpendicular lines | Lines that intersect and form right angles.
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| Skew lines | Lines that are not in the same plane and do not intersect.
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| Degrees | A unit of measure of an angle; measured with a protractor.
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