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32 Cards in this Set
- Front
- Back
collinear
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points that lie on the same line
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obtuse triangle
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a triangle in which one of the angles is obtuse
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reflexive property
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any line or angle in congruent to itself
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complementary angles
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2 angles whose sum is 90
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equiangular triangle
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a triangle in which all angle's are congruent
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CPCTC
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corresponding parts of congruent triangles are congruent
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median
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a line segment drawn from any vertex of the triangle to the midpoint of the opposite side
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noncoplanar
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points, lines, or segments that do not lie on the same plane
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acute triangle
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a triangle in which all angles are acute
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coplanar
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points,lines, or segments that lie on the same plane
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trisect
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2 points that divide a segment into 3 congruent segments
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altitude
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a perpendicular line segment from a vertex of a triangle to the line containing the opposite side
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congruent triangles
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all pairs of corresponding parts are congruent
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leg
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the sides that are formed from the right angle
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line
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straight, made up of at least 2 points and extends infinitely far in both directions
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hypotenuse
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the side opposite the right angle
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equilateral triangle
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a triangle in which all sides are congruent
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supplementary angles
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2 angles whose sum is 180
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congruent
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segments or angles that have the same length or measure
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isosceles triangle
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a triangle in which at least two sides are congruent
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right triangle
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a triangle in which one of the angles is a right angle
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angle
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made up of 2 rays with a common endpoint
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ray
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made up of points and are straight and begin at an endpoint and extends infinitely far in only one direction
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perpendicular
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lines, rays or segments that intersect at right angles
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obtuse angle
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an angle whose measure is greater than 90 and less than 180
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slope
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the slope (m) of a nonvertical line, segment, or ray containing (x ,y ) and (x ,y ) is defined by the formula
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right angle
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an angle whose measure is 90
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noncollinear
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points that do not lie on the same line
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bisect
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a ray that divides an angle into two congruent angles
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acute angle
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angle whose measure is greater than 0 and less than 90
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scalene triangle
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a triangle in which no two sides are congruent
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straight angle
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an angle whose measure is 180
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