Lines
A line that has a starting point and a direction
What is Directed Line Segment
two angles whose sum is 90 degrees.
What is complementary angles
A transformation that doesn't change the size or shape of a geometric figure
What is a rigid transformation
if there is a sequence of transformations that takes the first figure onto the second
What is congruent
Two lines that don't intersect
What is Parallel Lines
two angles whose sum is 180 degrees
What is supplementary angles
Every point of a figure moves in a circle around the center. There needs to be a direction, clockwise or counterclockwise, and an angle.
What is a rotation
the arrangements of points(clockwise or counterclockwise) after a transformation or after traveling around a geometric figure.
What is orientation
a line through the midpoint of the segment that is perpendicular to it
What is a perpendicular bisector
angles that are opposite each other at an intersection.
What is a vertical angle
This transformation takes a point to another point that is the same distance from the given line, is on the other side of the given line, and so that the segment from the original point to the image is perpendicular to the given line.
What is a reflection
Two congruent angles are on opposite sides of transversal and outside the parallel lines.
What are alternate exterior angles
lines that intersect at a 90 degrees angle
What is perpendicular lines
The pairs of congruent angles on the same side of transversal line.
What is corresponding angles
A type of rigid transformation that takes each point in a figure and slides it the same distance in the same direction
What is a translation
The two angles that occur on the same side of the transversal always add up to 180º .
What are co-interior angles
a line such that reflection across the line takes the figure onto itself.
What is line of symmetry
Two congruent angles are on opposite sides of transversal and inside the parallel lines.
What are alternate interior angles
if a shape has a rotation between 0 and 360 degrees that takes the shape to itself.
What is rotation symmetry
A rigid transformation that takes one figure onto another, a part of the first figure and its image in the second figure
What is corresponding parts