Question | Answer |
congruent | having exactly the same size and shape. |
diameter | A line segment that passes through the center of a circle and has endpoints on the circleand is twice the radius. |
line | a set of points that extends without end in two opposite directions. |
line segment | part of a line with a point at each end. |
midpoint | a point that is equal distance from the two endpoints of a line segment. |
parallel | lines, rays, or line segments that are the same distance apart and never meet. |
perpendicular | lines, rays, or line segments that meet at right angles. |
radius | A line segment from the center of a circle to any point on the circle and is one half the diameter. |
ray | A part of a line that has one endpoint and extends without end in one direction. |
acute triangle | a triangle with all angles measuring less than 90 degrees |
adjacent angles | Two angles that have a common vertex and one common side. |
area | The amount of surface inside a closed boundary and is measured in square units. |
complementary angles | Two angles whose measures have a sum of 90. |
horizontal | In a left right orientation; parallel to the horizon. |
Circle graph | a graph that uses sections of a circle to compare parts to a whole and parts to other parts |
perimeter | The distance around a closed 2-dimensional shape. |
supplementary angles | Two angles whose measures have a sum of 180. |
vertex | The point at which two line segments, lines or rays meet to form an angle. |
vertical | Upright; perpendicular to the horizon. |
circumference | the distance around a circle |
complement | all the ways that an event can not happen |
coordinates | the numbers of an ordered pair that locate a point on a coordinate graph |
exponent | the number that indicates how many times the base is used as a factor |