Right Angles

A right angle is an angle that measures exactly 90 degrees. It is often represented by a small square in the corner of the angle. In geometry, right angles are important in understanding the properties of shapes and in solving problems related to measurements and spatial reasoning.

Properties of Right Angles:

1. A right angle measures 90 degrees.
2. When two lines intersect at a right angle, they form four 90-degree angles.
3. A right angle is half of a straight angle, which measures 180 degrees.

Examples of Right Angles:

Some common examples of right angles include:

• The corners of a square or rectangle
• The intersection of two perpendicular lines
• The hands of a clock at 3:00 or 9:00

Study Guide:

To understand right angles better, it's important to remember the following key points:

1. Memorize the definition of a right angle: a 90-degree angle.
2. Practice identifying right angles in different shapes and objects around you.
3. Understand the relationship between right angles and perpendicular lines.
4. Work on problems that involve measuring and drawing right angles.

By mastering the concept of right angles, you'll be better equipped to tackle more advanced geometry topics and real-world applications of angles and shapes.