Communicating with Terminology

Slide

A synonym for translation

Vector

The distance of a translation

Orientation same

When the orientation remains unchanged

Rigid transformation

A synonym for congruent transformation

Congruent

When the shape and size remain unchanged

Distance

The length of the space between two points

Preimage

The point before the transformation occurs

Image

The point after the transformation occurs

Prime

The coordinates of a point after the transformation occurs

Notation

The shorthand method to record transformations

Position

The place where a point is situated

Corresponding

A set of equal angles

Cartesian plane

A plane with a x-axis and a y-axis

Coordinates

Notation of a point on a plane

Line of symmetry

The line where the reflection occurs across

Flip

A synonym for reflection

Centre point of rotation

The point where the rotation occurs around

Clockwise

Direction of rotation equivalent to a clock’s direction

Counter clockwise

Direction of rotation not equivalent to a clock’s direction

Degrees

The distance of rotation of a point

Right angle

An angle equivalent to 90 degrees

Straight angle

An angle equivalent to 180 degrees

Scale factor

The amount a point has been enlarged or reduced by

Centre of dilation

The point where the dilation occurs from

Enlarge

A dilation that results in a larger image

Reduce

A dilation that results in a smaller image

Similar

A point of close resemblance to another point