Math Exam Vocab
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34 terms
Terms | 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 |
| quadrilateral | four-sided polygon |
| 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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