Exam (elaborations) Mathematics for Elementary Educators III - D127

vertical line A line that runs up and down on the coordinate plane, parallel to the yaxis. It has no run, or change in x-value. complementary angles Two angles whose sum is equal to 90°. line A straight one-dimensional figure that extends infinitely in both directions. origin The point on a coordinate plane where the x-axis and y-axis intersect. Typically, the point represents 0 on both axes. tangent A straight line that touches a circle at only one point. circle The set of all points that are equidistant from a point. inscribed angles Shape formed when 2 lines or rays meet with a vertex that meets the circumference of a circle. line segment Shortest distance between two points; completely straight with two endpoints. diagonal A line segment with vertices as endpoints that is not an edge. rhombus