ANGLES GRADE 3. Hello, How are you doing? Today, we are going to start a new lesson on Angles.

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Presentation transcript:

ANGLES GRADE 3

Hello, How are you doing? Today, we are going to start a new lesson on Angles.

Angle Angle is defined as the figure formed when two rays or lines meet at the same point.

Different type of angles Different type of angles-  Right angle  Acute angle  Obtuse angle  Straight angle

Right angle Right angle – An angle that forms a square corner. Right angle symbol

Acute angle Acute angle –An angle that is less than right angle.

Obtuse Angle Obtuse Angle – An angle that is greater than right angle.

What is the angle formed at the point A in the figure given below? Answer- Right angle A

Straight angle Straight Angle - An angle formed by a straight line.

Important Tip Perpendicular Lines always form Right angle.

Name the angle formed by a line segment. Answer- straight angle

How many angles greater than 90° are in the word FAME? Answer – 2 (in alphabet A)

Which letter is made up of two right angles? a) W b) D c) L d) T

Draw the following angles. a) Right Angle b) An angle less than 90° A B

ASSESSMENT

1.Name the angles greater than 90° in the figure given below. Answer – 2 and

2.Name the angles that are 90° in the figure given in Question No 1. Answer – 1 and 5

3.Match the following. Angle formed by alphabet V Right angle Angle formed when clock shows 4 O’clock Acute angle Angles formed by alphabet H Obtuse angle

4.Name the angle formed by the letter L of the English alphabet. Answer – Right angle

5.How many angles are 90° in the figure given below? Answer - 2

6.Name all the angles formed in the figure given below. Answer- acute angle, obtuse angle, right angle

7.Name the angles formed by the figure given below. Answer – acute angle and obtuse angle

8.Name the angle formed when clock shows 3 O’clock? Answer- right angle

9.What kind of angle is formed by the figure given below? Answer – acute and obtuse angle

10.Decide whether angle is acute, obtuse or right in the figure given below. Answer – obtuse angle

Recap Angles  Acute angle  Obtuse angle  Right angle  Straight angle Solved examples Practice problems

Good Work! Now Practice worksheets on the lesson.