The mutual perpendicular lines intersecting each other at their zeroes are called rectangular axes or coordinate axes.

The horizontal axis is called the x-axis and the vertical axis is called the y-axis. (0,0) is called the origin.

The position of a point in a plane is expressed by a pair of two numbers called coordinates.

Reflection is a map that transforms an object into its mirror image.

A point that does not change upon undergoing a certain reflection is said to have reflection symmetry and is known as the invariant point.

## Coordinate Geometry – Reflection PDF

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