Term
| The point where three or more lines intersect |
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Definition
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| A line, segment, or ray that intersects a segment at its midpoint and forms right angles with the segment. |
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| The point where the three medians of a triangle intersect |
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| A segment in a triangle that connects the midpoints of two sides of the triangle. |
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| The point where the three angle bisectors of a triangle intersect. |
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| The point where the three perpendicular bisectors of a triangle intersect. |
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Term
| A segment in a triangle that connects a vertex of the triangle to the midpoint of the opposite side. |
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Term
| Angles formed by parallel lines cut by a transversal that lie in the same relative position |
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Term
| Angles formed by parallel lines cut by a transversal that lie on opposite sides of the transversal and in between parallel lines |
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Definition
| Alternate Interior Angles |
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Term
| 2 non coplanar line that never intersect |
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Term
| 2 coplanar lines that never intersect |
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Term
| Any angles whose sum is 180 degrees |
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Definition
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Term
| Any angles whose sum is 180 degrees |
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Term
| Figures that are the same size and same shape |
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Term
| Figures that are the same shape (= corresponding angles) but not the same size (sides in proportion) |
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Term
| Adjacent angles whose non-common rays form a straight line |
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Term
| A pair of opposite rays that share a common endpoint |
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Definition
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Term
| A spot on a segment that divides the segment into two equal parts. |
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Definition
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Term
| 2 angles who share a common ray |
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Definition
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Term
| A line, segment, or ray that intersects an angle at its vertex dividing into two equal angles. |
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Definition
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Term
| Angles formed by a pair of intersecting lines that lie opposite each other. |
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