# Right Angle - Definition with Examples

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## Right Angle Games Right Angle

Identify right angles in different two dimensional shapes. Remember, you can recognize right angles by looking at perpendicular lines.

Covers Common Core Curriculum 4.G.2

## What is Right Angle?

In geometry, when two rays meet each at a common point, they form an angle. The point of meeting of two rays is known as the vertex.

Angles are measured in degrees (symbol: ˚) Some common types of angles are acute angles, right angles, and obtuse angles. Right angle

When two straight lines intersect each other at 90˚ or are perpendicular to each other at the intersection, they form the right angle. A right angle is represented by the symbol ∟. The given image shows various formations of the right angle. We can find the right angles in shapes.

A square or rectangle has four corners with right angles. Examples of right angles are all around us. We can see right angles in the corners of a room, book, cube, windows and at several other places. A vertical and a horizontal line make most common right angles. However, diagonal lines intersecting each other also form right angles. If you draw the diagonals of a square, a rhombus or a kite, the angle at the intersection is 90 degrees and is, therefore, a right angle. Example of a rhombus and a kite with diagonals intersecting at a right angle.

How to draw a right angle using a protractor?

1. Start by drawing a horizontal line. 2. Now place the protractor on the horizontal line. 3. Measure 90˚ and mark it with a point. 4. Now using a scale, draw a straight line from this point to the horizontal line. Fun Facts  All right angles are the same. All right angles correspond to quarter of a complete turn.  All triangles with one angle right are called right-angled triangles.

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