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Angle
Course modified date: 7 Jun 2022
Learn about angles, the different types of angle, how to measure angle and how to identify right angles in the real world. This course is ideal for intermediate learners.
Introduction
An angle is made when two lines cross.Angles are measured in degrees. The number of degrees in an angle measures the turn between the two lines. There are 360 degrees in a full circle.
We use a little circle symbol after the number to mean degrees. For example we write 90 degrees in the following way: 90° (the degrees sign is after the number 90).
There are different types of angle, such as:
• Right – a right angle is exactly 90°. The corners of squares and rectangles are 90° angles
• Acute – an acute angle is less than 90°
• Straight – a straight angle (the angle of measure for a straight line) is exactly 180°
• Obtuse – an obtuse angle is greater than 90° but less than 180°
• Reflex – a reflex angle is greater than 180°
• Rotation – a full rotation is 360° – the same as in a full circle
You will learn
- Know the different types of angle
- Know how to measure angle
- Be able to identify right angles in the real world
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