Point
an exact location in space
Line
A collection of an infinite number of points in a straight pathway with unlimited length and having no width.
Plane
a flat surface that has no thickness and extends forever
parallel lines
Coplanar lines that do not intersect. Their slopes are equal.
transformations
scaling, rotation, shearing (skewing), and reflecting (flipping) objects to change their appearance.
reflections
flipping motions
Reflections Across Parallel Lines
A composition of reflections across two parallel lines is a translation
Reflections across intersecting lines
A composition of reflections across two intersecting lines is a rotation
reflections across perpendicular lines
A reflection across perpendicular lines results in a rotation of the original figure.
translation
Sliding all the points of a shape according to given directions (up/down, right / left)
glide reflection
the composition of a translation followed by a reflection in a line parallel to the translation vector
Pre-image
the original figure
image
The transformed figure
Rotation
The spinning motion of shape on its axis