This is an initial attempt by my students of B.Ed. in creating Programmed Instructional material using the template I had provided them. Your observations and suggestions are welcome!

1. Topic:
class:
Let’s start module
1
Angles
7 TH
Programmed Instructional material

2. Objectives
At the end of this module you will be able to-
To know about definition of angles.
To know about there types.
To draw and identify different angles.
Let’s start module
2

3. Angles
• A figure formed by two rays with a common
initial point is called an angle.
• It is denoted by ‘>’.
• In a figure, an angle is formed
by rays BA & BC. BA and BC
are the arms of the angles and the common
initial point B is called the vertex.
Lets answer some questions
answer 3

4. Lets answer some questions
answer 4
Types of angles
• Definition
• When two arms of an angle overlap each other , the angle formed
between is zero angle.
• An angle which measures between 0◦ and 90◦ is called acute angle
• An angle which measure 90◦ is called a right angle.
• An angle which measure more than 90◦ but less than 180◦ is called a
obtuse angle.
• An angle which measure 180◦ is called a straight angle.
• An angle which measure more than 180◦ but less than 360◦ is called a
reflex angle.
• When the sum of two angle are 90◦ is known as complementary angle.
• When the sum of two angles are 180◦ is known as supplementary angle.
• An angles which measure is 360◦ is known as complete angle.

5. Q1: An angle is formed by joining______
rays.
-2
-4
-3
-5
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7. Oops ! Wrong Answer
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8. A) Congratulations you have selected
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9. Q 2:common initial point of an angle is
known as ________
-Bisector .
-Vertex.
-Diagonal.
-Arms.
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11. Oops! Wrong Answer
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12. B) Congratulations you have selected
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13. Q3: The zero angle is the angle in
which both the arms __________
- Does not overlaps.
-Coincides.
-Never overlaps.
-overlaps.
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15. Oops! Wrong Answer
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16. D) Congratulations you have selected
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17. Q 4:The angles which measure between 0°
to 90° is termed as_________ angle.
-Acute.
-Right.
-Obtuse.
-Reflex.
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19. Oops! Wrong Answer
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21. Q5:Which angle is formed if its
measures 90° ?
-Zero.
-Acute
-Obtuse.
- Right.
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23. Oops! Wrong Answer
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24. D) Congratulations you have selected
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25. Q6:The angle which measures between 90°
to 180° is termed as _________ angle.
-Right.
-Acute.
-Obtuse.
-Straight.
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27. Oops! Wrong Answer
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28. C)Congratulations you have selected
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29. Q7: _______ angle measures 180°.
-Zero.
-Straight
-Obtuse.
-Acute.
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31. Oops! Wrong Answer
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32. B)Congratulations you have selected
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33. Q8:An angle which measure more than
180° but less than 360°is called _______
angle.
-Right.
-Acute.
-Complete.
- Reflex.
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34. Oops! Wrong Answer
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35. Oops! Wrong Answer
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36. D) Congratulations you have selected
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37. Congratulations you have Scored 80
marks!
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