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28 Cards in this Set
- Front
- Back
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Lines that intersect at the same pt
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concurrent lines
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the point where cuncurrent lines intersect
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point of concurrency
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the point of concurrency of a triangles 3 angle bisectors
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incenter
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the point of concurrency of a triangles 3 altitudes
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orthocenter
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intersecting each side of the polygon exactly once
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inscribed circle in a polygon
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passing through each vertex of the polygon
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circumscribed circle about a polygon
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the point of cuncurrency
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centroid
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a line that divides a line segment into two congruent parts and is perpendicular to the line segment
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perpendicular bisector
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a perpendicular segment from a vertex to the base or to the line or plane containing the base
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altitude
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a ray that has its endpoint at the vertex of the angle and divides the angle into two congruent angles
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angle bisector
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a line segment connecting a vertex of a triangle to the midpoint of the opposite side
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median
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the point of concurrency for the three altitudes
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circumcenter
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same size and shape
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congruent
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lines that meet at 90 degree angles
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perpendicular lines
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angles with a sum of 90 degrees
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complimentary angles
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angles with a sum up 180 degrees
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supplementary angles
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2 angles that share a common vertex and sides for two lines
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verticle angles
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2 supplementary adjacent angles whose non common sides form a line
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linear pair of angles
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polygon with three sides
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triangle
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4 sides
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quadrilateral
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5 sides
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pentagon
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6 sides
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hexagon
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7 sides
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heptagon
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8 sides
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octagon
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10 sides
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decagon
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12 sides
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dodecagon
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triangle with no congruent angles
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scalene triangle
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triangle with at least 2 congruent sides
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isosceles
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