This document contains a lesson plan covering geometric shapes and angles. It defines key terms like point, line, ray, line segment, and angle. It classifies angles as right, acute, obtuse, and straight. It discusses complementary and supplementary angles. Examples are provided to illustrate each concept. Homework includes identifying and classifying angles, finding missing angles, and determining complementary and supplementary angles.

1. Month: JULY
CYCLE 5
Period1

2. Learning objectives
* Define Point, Line, Ray, Line segment, Angle
* Name the angle formed.

3. Point:
* Point is a very small dot
representing a position.
* A point has no length, breadth and
height.
* Points are represented by capital
alphabets.
Ex:

4. Line:

5. Line:
* A line is a straight one-dimensional
figure having no thickness and extending
indefinitely in both the directions.
* The line has no starting point and ending
point.
* Only one line can be drawn through two
given points.
Ex:

6. Ray :

7. Ray :
* A ray is a part of a line.
* A ray is a line with a starting
point that extends infinitely in one
direction.
* It has only one starting point.
Ex:

8. Rays: Examples

9. Line segment:

10. Line segment:
* A line segment is a part of a line with a
starting point and an ending point.
* It has definite length.
* The shortest distance between two points
is the line segment.
Ex:

11. Line Segment in
Geometrical shapes

12. What is an Angle ?

13. Angle:
A shape formed by two rays
starting from a common point.
(vertex).

14. • An angle is represented by the
symbol ∠.
• Naming the angle:
∠AOB or ∠BOA or ∠O

15. How many angles are formed when
two lines intersect at a point?

16. How many angles are formed when
two lines intersect at a point?

17. Angles : Examples

18. Angles around us

19. Angles around us

20. 1) What happen to the measure
of the angle if we extend both
the rays?
Will the measure of the angle
change?

22. Which 3 line segments would you erase
to get exactly 3 squares (with no extra
line segments)?

23. Which 3 line segments would you erase
to get exactly 3 squares (with no extra
line segments)?

24. Which of the angles below is nearest in
measure to the one formed by the boy’s
arms?

25. Homework: Term 1 Math book Pg:18
Do the table in Math notebook

26. Homework - Answers

27. Month: JULY
CYCLE 3
Period 2

28. Learning objectives
• Identify / classify the types of angles.
• Define / Find the complementary and
supplementary angles
• Find the missing angles.
Video:
https://www.youtube.com/watch?v=UgfSwlqi4Qg

30. Types of Angles
Angles can be classified on the basis
of their measurements as
Zero angle
Right Angle
Acute Angle
Obtuse Angle
Straight Angle

31. Right Angles
The measure of an angle is
exactly 90o .

32. Examples
Right Angles

33. Right angle in shapes

34. Acute Angles
The measure of an angle which
lies between 00 and 900 is called
acute angles.

35. Acute Angles

36. Obtuse Angle
The measure of an angle which
lies between 90o and 180o is called
an obtuse angle.

37. Obtuse Angles
Examples

38. Straight angle
The measure of an angle which
is exactly 180o .

39. Straight angle
Examples

40. Name the angle

41. Name the angle

42. 1) How many right angles are there in
a straight angle?

44. • Angles are measured in degrees,
using a protractor.

45. Classify the angles as
acute, obtuse and right angle

46. Classify the angles as
acute, obtuse and right angle

47. Identify the type of angle

48. Identify the type of angle in the given stick figure

50. Classify the angles as
acute, obtuse and right angle
a) 300 - d) 50 -
b) 910 - e) 1110 -
c) 1300 - f) 900 -

51. At what time given below do the minute hand and hour
hand of a clock make a right angle?
a) 12 o’clock b) Quarter to 9
c) Quarter past 9 d) Quarter past 12
How many angles in the rectangle are less than 90
degree?
a) 12 b) 13 c) 14 d) 15

52. At what time given below do the minute hand and hour
hand of a clock make a right angle?
a) 12 o’clock b) Quarter to 9
c) Quarter past 9 d) Quarter past 12
How many angles in the rectangle are less than 90
degree?
a) 12 b) 13 c) 14 d) 15

53. Complementary angles:
Two angles are said to be complementary
angles when they add up to 90 degrees.
Supplementary angles:
Two angles are said to be supplementary
angles when they add up to 180 degrees.

56. Find the complementary / supplementary angles in
each case.

57. Homework
1) Term 1 Math book pg 22, 23 Ex: 1.2
2)

58. Homework - Answers

59. Page 22 in book
Ex: 1.2