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32 Cards in this Set
 Front
 Back
collinear

points that lie on the same line


obtuse triangle

a triangle in which one of the angles is obtuse


reflexive property

any line or angle in congruent to itself


complementary angles

2 angles whose sum is 90


equiangular triangle

a triangle in which all angle's are congruent


CPCTC

corresponding parts of congruent triangles are congruent


median

a line segment drawn from any vertex of the triangle to the midpoint of the opposite side


noncoplanar

points, lines, or segments that do not lie on the same plane


acute triangle

a triangle in which all angles are acute


coplanar

points,lines, or segments that lie on the same plane


trisect

2 points that divide a segment into 3 congruent segments


altitude

a perpendicular line segment from a vertex of a triangle to the line containing the opposite side


congruent triangles

all pairs of corresponding parts are congruent


leg

the sides that are formed from the right angle


line

straight, made up of at least 2 points and extends infinitely far in both directions


hypotenuse

the side opposite the right angle


equilateral triangle

a triangle in which all sides are congruent


supplementary angles

2 angles whose sum is 180


congruent

segments or angles that have the same length or measure


isosceles triangle

a triangle in which at least two sides are congruent


right triangle

a triangle in which one of the angles is a right angle


angle

made up of 2 rays with a common endpoint


ray

made up of points and are straight and begin at an endpoint and extends infinitely far in only one direction


perpendicular

lines, rays or segments that intersect at right angles


obtuse angle

an angle whose measure is greater than 90 and less than 180


slope

the slope (m) of a nonvertical line, segment, or ray containing (x ,y ) and (x ,y ) is defined by the formula


right angle

an angle whose measure is 90


noncollinear

points that do not lie on the same line


bisect

a ray that divides an angle into two congruent angles


acute angle

angle whose measure is greater than 0 and less than 90


scalene triangle

a triangle in which no two sides are congruent


straight angle

an angle whose measure is 180
