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29 Cards in this Set
- Front
- Back
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Plane |
A set of all points with no hieght but infinite length and width |
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Space |
A set of all points |
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Ray |
Line with an endpoint that extends to all the points in the other direction |
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Adjacent angles |
Angles that are on the same plane with the same vertex and side between them |
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Skew lines |
noncoplanar lines that dont intersect |
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Vertical angles |
Inverse of adjacent lines. Made from two intersecting lines |
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Median of a triangle |
Segment that extends from the vertex of a triangle to the midpoint of the opposite side. |
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Altitude of a triangle |
Segment from the vetex perpendicular to the opposite line/side of the triangle |
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Collinear points |
Points that lie on the same line |
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Non collinear points |
Inverse of collinear |
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Segment |
Part of a line with two endpoints |
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Congruent |
Same measure |
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Midpoint of a segment |
A point that splits a segment into two conguent segments |
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Bisector of a segment |
A ray extending from the midpoint of a segment to the opposite direction |
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Acute angle |
Angle measuring less than 90° |
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Right angle |
Angle measuring 90° |
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Obtuse angle |
Angle measuring over 90° and less than 180° |
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Equilateral triangle |
Triangle with all sides congruent |
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Scalene triangle |
Triangle with no sides congruent. |
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Isosceles triangle |
Triangle with two sides congruent |
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Equiangular triangle |
Triangle with all angles congruent |
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Intersecting lines |
Two lines that meet at one point |
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Perpendicular lines |
Lines that intersect and form right angles |
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Parallel line |
Coplanar Lines that never meet |
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Perpendicular bisector |
Bisector that forms a right angle |
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Complementary angles |
Angles whose sum is 90° |
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Supplementary angles |
Angles whose sum is 180° |
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Congruent triangles |
Triangles whose angle measures and segment lengths are the same/congruent |
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Mean proportional/Geometric mean |
Means in a proportion are equal. |
