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17 Cards in this Set
- Front
- Back
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intersect
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To have one or more points in common.
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intersect
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glossary
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midpoint
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the point that divides or besects a segment into two congruent segments.
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angle bisector
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a ray that divides an angle into two adjacent angles that are congruent
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perpendicular lines
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Two lines that intersect to form a right angle
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perpendicular bisector
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a segmant, ray, line, or plane that is perpendicular to a segmant and its midpoint
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perpendicular bisector of a triangle
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a line, ray, or segmant that is perpendicular to a side of a trianlge at the midpoint of the side
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concurrent lines
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3 or more lines that intersect in the same point
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circumcenter of a triangle
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the point of concurrency of the perpendicular bisectors of a triangle
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angle bisector of a triangle
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a bisector of an angle of the triangle
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incenter of a triangle
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the point of concurrency of the angle bisectors of the triangle
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Median of a triangle
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a segmant whos endpoints are a vertex of the triangle and the midpoint of the opposite side.
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centroid of a triangle
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the point of concurrency of the medians of a tiangle
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altitude of a triangle
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the perpendicular segment from a vertex of a tiangle to the opposite side or to the line that contains the oppisite side
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orthocenter of a triangle
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the [pmt pf concurrency of the lines containing the altitudes of a tiangle
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midsegmant of a triangle
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a seg,emt that connects the midpoints of two sides of a triangle
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indirect proof
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a proof in which you prove that a statement is true by first assuming that its opposite is true. if this assumption leads to an impossibility then you have proved that the original statement is true.
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