What is isometry ?

An isometry is a transformation where the original figure and its image are congruent.

Types of isometry                    Not a type

        -  Reflection                             -  Dilation 
        -  Rotation   
       -  Translation  

• The reason why dilation isn't a isometry is because the original image is either shrunk or enlarged.

Examples:

    

Reflection

Rotation 

Translation



Practice Question :


What is the type of isometry in the given figure ?

A) Rotation

B) Reflection

C) translation

D) Dilation

Answer : C Translation