Lines on a Graph and Points on a Graph
Parallel Lines
Parallel lines are lines in the same plane that do not intercept.
Interior Angles
Interior angles are angles inside a polygon, or any of the four angles formed in the area between a pair of parallel lines when a third line cuts them.
Angle of Rotation
The number of degrees a figure rotates is the angle of rotation.
Perpendicular Lines
Lines that intersect at right angles, and the two lines slope have opposite reciprocals are perpendicular lines.
Alternate Interior Angles
Angles on the opposite sides of the transversal that are still interior angles and are not touching.
Center of Rotation
The point in which a figure is rotated is the center of rotation.
X-intercept
The x-intercept is where the x-coordinate of the point of a line crosses the x-axis.
Exterior Angles
The angles adjacent to the interior angles of a polygon or angles formed by a transversal as it cuts one of two lines and situated on the outside of the line.
Rotation
A rotation, of turn, is a transformation in which a figure is rotated about a point called the center of rotation.
Y-intercept
The y-intercept is where the y-coordinate of the point of a line crosses the y-axis.
Alternate Exterior Angles
Angles that are on the opposite sides of the transversal that are still exterior angles and are not touching.
Corresponding Angles
Matching angles are called corresponding angles.