Class 5 (ICSE) • MathematicsChapter 8: Geometry - Angles and Shapes⭐ Topic 1
Geometry - Angles and Shapes
Angles are formed where two lines meet, measured in degrees, and understanding different types of angles helps us classify shapes.
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Fun picture
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Learn the idea step by step
1
Know it
An angle is measured in degrees, with a right angle being exactly 90 degrees, like the corner of a square.
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An acute angle is smaller than 90 degrees, while an obtuse angle is bigger than 90 degrees but smaller than 180 degrees.
Quick revision
Remember these!
- Angles are measured in degrees.
- A right angle is exactly 90 degrees.
- An acute angle is smaller than 90 degrees.
- An obtuse angle is between 90 and 180 degrees.
- A straight angle is exactly 180 degrees.
- Angles help classify shapes.
- Triangles and quadrilaterals have angle properties.
- Understanding angles aids geometry.
Words to know
geometry - angles and shapesicse class 5