## Math Exam Vocab

##### Created by:

aeblouch  on January 24, 2010

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# Math Exam Vocab

 Linear Paira pair of adjacent angles whose uncommon sides are opposite rays
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#### Definitions

Linear Pair a pair of adjacent angles whose uncommon sides are opposite rays
perpendicular lines two lines that intersect to form a right angle
complementary angles two angles whose degree measures have a sum of 90
supplementary angles two angles whose degree measures have a sum of 180
vertical angles two nonadjacent angles formed by two intersecting lines
adjacent angles two angles in the same plane that have a common vertex and a common side, but no common interior points
collinear points that lie on the same line
coplanar points that lie on the same plane
bisector segment cuts an angle in half
midpoint mid point on a line
conditional statement a statement written in if-then form
converse switching the hypothesis and conclusion of the conditional
inverse negating both the hypothesis and the conclusion
contrapositive switching and then negating the hypothesis and the conclusion
parallel lines lines on the same plane that don't intersect
skew lines two lines not in the same plane that do not intersect
transversal a line that crosses at least two lines at different points
altitude segment goes from the vertex to the midpoint of the opposite side
angle bisector line that cuts an angle in half
median a segment that joins a vertex of the triangle and the midpoint of the opposite side
perpendicular bisector a segment that is both an altitude and a median
hinge theorem size/length of angles/sides correspond to one another
HL theorem hypotenuse-leg, used to prove two right triangles congruent
parallelogram a quad in which both pairs of opposite sides are parallel
rectangle a quad with four right angles
rhombus a quad w/ all 4 sides congruent
square quad w. four right angles and all 4 sides congruent
trapezoid quad that has one pair of parallel sides
median of trapezoid the segment that joins the midpoint of the legs
isosceles trapezoid a trapezoid in which the legs are congruent
scale factor the ratio of the lengths of two corresponding sides of two similar polygons
similar polygons a correspondence between their vertices such that corresponding angles are congruent and the measures of corresponding sides are proportional
ratio a comparison of two numbers using division

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