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19 Cards in this Set
- Front
- Back
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congruent angles
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angles with the same measure
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angle bisector
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a ray that divides an angle into 2 equal parts
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vertical angles
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two angles in which the sides are opposite rays
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adjacent angles
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two coplanar angles with a common side, a common vertex and no common interior points
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linear pair
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adjacent and supplementary
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complemantary
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90°
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supplementary
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180°
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transversal
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a line that intersects two more coplanar lines in distinct points
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alt. int
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<4&<6 or <3 and <5
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corresponding anglesangles
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<2 and <6
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transformation
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when a geometric figure is a function or mapping that results a change in position shape or size of the figure
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rigid motion
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a transformation that preserved distance and angle measures
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isometry
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after the transformation the PR image and the image are congruent
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circumcenter
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the point of concurrency of the perpendicular bisectors of the triangle
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median
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a segment whose endpoints are a vertex and the midpoint of the opposite side
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centroid
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the point of concurrency of the medians
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altitude
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the perpendicular segment from a vertex to the line containing the opposite side of a triangle
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orthocenter
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the point where the lines containing the altitudes of a triangle are concurrent
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midsegment
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the segment connecting the midpoints of two sides of a triangle
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