Class 4 Maths Angles @kidsknowledgepoint


Understanding Angles in Mathematics

In mathematics, an angle is formed when two lines meet at a point. This point is called the vertex, and the lines are called arms. Angles are everywhere around us—like when a door opens, the space between the door and the wall is an angle. Let’s learn more about angles!

Types of Angles

  1. Right Angle (90 degrees):
    This angle looks like the corner of a square. A right angle measures exactly 90 degrees. Think of the angle when a book is open perfectly halfway.

  2. Acute Angle (Less than 90 degrees):
    An acute angle is smaller than a right angle. If you slightly open a door, the small gap creates an acute angle.

  3. Obtuse Angle (More than 90 degrees but less than 180 degrees):
    An obtuse angle is bigger than a right angle but not completely straight. When you open a book wide but not flat, the angle you see is obtuse.

  4. Straight Angle (180 degrees):
    A straight angle looks like a straight line. It measures exactly 180 degrees, like when a door is completely open and flat against the wall.

How to Measure Angles

We measure angles using a tool called a protractor. A protractor helps us find out how many degrees an angle is. Angles are measured in degrees, and the symbol for degrees is “°”.

Real-Life Examples of Angles

  • The hands of a clock form different angles throughout the day.
  • The corners of a piece of paper are right angles.
  • A slice of pizza makes an acute angle.

Why Are Angles Important?

Angles help us understand shapes, designs, and directions. Architects, engineers, and artists use angles in their work. Even when you ride your bike around a curve, angles help keep you on track!

Conclusion

Angles are a simple but important part of math and life. By knowing how to identify and measure angles, you can better understand the world around you. Keep practicing, and you’ll start spotting angles everywhere!

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