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Q. What is geometry?
Answer: Geometry is the branch of
mathematics in which we deals with points,
lines, curves, surfaces and shapes.
Q. How many end points of a line
segment?
Answer: A line segment has two end points.
Q. How many end points of a line?
Answer: A line has no end point.
Q. How many end points of a ray?
Answer: A ray has only one end point.
Q. How many end points of a ray?
Answer: A ray has only one end point.
Example # 1: Draw a line segment 8cm in length
and divide it into 5 equal parts.
STEPS OF CONSTRUCTION:
• The line segment AB of length 8 cm is drawn.
• At A, AX is drawn making an angle of 30° with
protector.
• Using compasses from point A, 5 arcs are drawn
on AX with suitable radius mark their intersection
points as C, D, E, F and G. Such that AC = CD =
DE = EF = FG.
• At B, BY is drawn making an angle of 30° with
protector.
• Using compasses from point B, 5 arcs are drawn
on BY with same radius and mark their intersection
points as H, I, J, K and L . Such that BH = HI = IJ =
JK = KL.
• Join the points A to L, C to K, D to J, E to I, F to H,
and G to B.
• Hence, line segment AB is divided into 5 equal
parts.
8cmA B
30°
X
30°
C
D
E
F
G
H
I
J
K
L
Y
Q. What we have discussed today?
Answer: Dividing a line segment into equal parts.
Q. Name the instrument which we use for dividing
a line segment into equal parts.
Answer: We use Ruler, Pencil, Protector and
Compass for dividing a line segment into equal
parts.
Q. What is the first step of construction?
Answer: Draw a line segment of given length.
Q. What is the second step of construction?
Answer: At point A, draw an angle of 30° with
protector.
Q. What is the third step of construction?
Answer: Using compasses from point A, five arcs
are marked with suitable radius on AX.
Q. What is the forth step of construction?
Answer: At point B, draw the same angle of 30°
with protector.
Q. What is the fifth step of construction?
Answer: Using compasses from point B five arcs
are marked with the same radius on BY.
Q. Which points will join from the given figure?
8cmA B
30°
X
30°
C
D
E
F
G
H
I
J
K
L
Y
Answer: Join the points A to
L, C to K, D to J, E to I, F to
H and G to B.
Activity
• Draw a line segment 6cm in length and
divide it into 4 equal parts.

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ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
 

Zaheer abbasi

  • 1.
  • 2. Q. What is geometry? Answer: Geometry is the branch of mathematics in which we deals with points, lines, curves, surfaces and shapes.
  • 3. Q. How many end points of a line segment? Answer: A line segment has two end points.
  • 4. Q. How many end points of a line? Answer: A line has no end point.
  • 5. Q. How many end points of a ray? Answer: A ray has only one end point.
  • 6. Q. How many end points of a ray? Answer: A ray has only one end point.
  • 7.
  • 8. Example # 1: Draw a line segment 8cm in length and divide it into 5 equal parts. STEPS OF CONSTRUCTION: • The line segment AB of length 8 cm is drawn. • At A, AX is drawn making an angle of 30° with protector. • Using compasses from point A, 5 arcs are drawn on AX with suitable radius mark their intersection points as C, D, E, F and G. Such that AC = CD = DE = EF = FG. • At B, BY is drawn making an angle of 30° with protector. • Using compasses from point B, 5 arcs are drawn on BY with same radius and mark their intersection points as H, I, J, K and L . Such that BH = HI = IJ = JK = KL. • Join the points A to L, C to K, D to J, E to I, F to H, and G to B. • Hence, line segment AB is divided into 5 equal parts. 8cmA B 30° X 30° C D E F G H I J K L Y
  • 9. Q. What we have discussed today? Answer: Dividing a line segment into equal parts.
  • 10. Q. Name the instrument which we use for dividing a line segment into equal parts. Answer: We use Ruler, Pencil, Protector and Compass for dividing a line segment into equal parts.
  • 11. Q. What is the first step of construction? Answer: Draw a line segment of given length.
  • 12. Q. What is the second step of construction? Answer: At point A, draw an angle of 30° with protector.
  • 13. Q. What is the third step of construction? Answer: Using compasses from point A, five arcs are marked with suitable radius on AX.
  • 14. Q. What is the forth step of construction? Answer: At point B, draw the same angle of 30° with protector.
  • 15. Q. What is the fifth step of construction? Answer: Using compasses from point B five arcs are marked with the same radius on BY.
  • 16. Q. Which points will join from the given figure? 8cmA B 30° X 30° C D E F G H I J K L Y Answer: Join the points A to L, C to K, D to J, E to I, F to H and G to B.
  • 17. Activity • Draw a line segment 6cm in length and divide it into 4 equal parts.

Editor's Notes

  1. Prepare by Zaheer Abbasi 06/03/13 Class VII Fazaia Intermediate College
  2. Prepare by Zaheer Abbasi 06/03/13 Class VII Fazaia Intermediate College