WEEKLY LESSON PLAN – TOPIC: CONSTRUCTIONS
Monday: Geometrical Terms (Point, Line, Line Segment, Ray, Plane)
Explanation & Examples:
Point: A position in space with no size.
Example: Dot on paper (●).
Line: A straight path extending infinitely in both directions.
Example: ↔
Line Segment: A part of a line with two endpoints.
Example: AB with endpoints A and B.
Ray: A line with one endpoint and extends infinitely in one direction.
Example: →
Plane: A flat surface extending infinitely in all directions.
Example: Surface of a table.
Activities:
1. Draw and label a point named P.
2. Draw and label a line named XY.
3. Draw and label a line segment AB of 5 cm.
4. Draw and label a ray starting at O through A.
5. Represent a plane using a rectangle and label it.
6. Identify examples of line, point, ray in your classroom.
Tuesday: Measure Different Lines and Angles Accurately
Explanation & Examples:
Use a ruler to measure line segments.
Use a protractor to measure angles.
Example 1: Measure 6 cm using a ruler.
Example 2: Measure an angle of 45°.
Example 3: Measure an angle of 120°.
Activities:
1. Draw a line segment of 4 cm and measure it.
2. Draw a line segment of 8 cm and measure it.
3. Draw and measure an angle of 30°.
4. Draw and measure an angle of 75°.
5. Draw and measure an angle of 150°.
6. Find objects in your classroom with right angles and measure.
Wednesday: Construct Different Types of Angles (Acute, Obtuse, Right,
Straight, Reflex)
Explanation & Examples:
Acute Angle: Less than 90° (e.g., 45°).
Right Angle: Exactly 90°.
Obtuse Angle: Between 90° and 180° (e.g., 120°).
Straight Angle: 180°.
Reflex Angle: Greater than 180° (e.g., 240°).
Activities:
1. Construct an acute angle of 45°.
2. Construct an acute angle of 30°.
3. Construct an obtuse angle of 120°.
4. Construct a right angle of 90°.
5. Construct a straight angle of 180°.
6. Construct a reflex angle of 240°.
Thursday: Real-Life Word Problems (Angles & Lines)
Word Problems:
1. A signboard makes an angle of 90° with the ground. What type of angle is this?
2. A ladder leaning against a wall makes an angle of 70° with the ground. What type of
angle is this?
3. A clock shows 3:00. What type of angle is formed between the hands?
4. A clock shows 6:00. What type of angle is this?
5. A door is opened such that it makes an angle of 120° with the frame. What type of angle
is this?
6. A Ferris wheel rotates through 240°. What type of angle is this?
Friday: Topic Task (Constructions) – 20 Marks
Instructions: Answer all questions. Space for answers provided.
1. Draw and label a line segment of 7 cm. (2 marks)
Answer: ________________________________
2. Draw and label a ray starting from point P through Q. (2 marks)
Answer: ________________________________
3. Construct an angle of 60° using a protractor. (3 marks)
Answer: ________________________________
4. Construct an obtuse angle of 120°. (3 marks)
Answer: ________________________________
5. Draw and label a point, a line, and a plane. (3 marks)
Answer: ________________________________
6. Measure and write the size of this angle: _______ (Draw an angle for learner). (2 marks)
Answer: ________________________________
7. Construct a reflex angle of 210°. (3 marks)
Answer: ________________________________
Total: 20 marks
GEOMETRY TEST – ANGLES PROPERTIES (20 MARKS)
Instructions:
Answer all questions.
Show all necessary steps.
Total marks = 20.
Question 1
(a) Define complementary angles. (1 mark)
Answer: ____________________________________________
(b) Define supplementary angles. (1 mark)
Answer: ____________________________________________
[Total: 2 marks]
Question 2
Look at the figure below:
A ●————● B ————● C
AB and BC are on a straight line. If ∠ABC = 65°,
(a) Find the angle adjacent to ∠ABC on the straight line. (2 marks)
Answer: ______________________________
(b) What do you call this pair of angles? (1 mark)
Answer: ______________________________
[Total: 3 marks]
Question 3
Angles at a point sum up to 360°.
( ? )
\ | /
\|/
(90°) —●— (85°)
/|\
/ | \
(120°)
If four angles around a point are 90°, 85°, and 120°, find the fourth angle. (2 marks)
Answer: ______________________________
Question 4
Two straight lines intersect as shown:
\ /
\ /
(75°)\ / ( ? )
/ \
/ \
/ \
One angle is 75°.
(a) Find the opposite angle. (1 mark)
(b) Find one adjacent angle. (1 mark)
[Total: 2 marks]
In the figure below, AB ∥ CD and EF is a transversal:
Question 5
AB ————————
\
\ (65°)
CD ————————
If the angle at the top is 65°,
(a) Find the corresponding angle. (1 mark)
(b) Find the alternate angle. (1 mark)
(c) Find the co-interior angle. (1 mark)
[Total: 3 marks]
Question 6
A triangle has angles x, 50°, and 70°.
(x)
/\
/ \
(50°)/____\(70°)
(a) Find x. (2 marks)
Answer: ______________________________
(b) What do all angles of a triangle sum to? (1 mark)
Answer: ______________________________
[Total: 3 marks]
TOTAL: 20 MARKS
