Exercise 4.1
1. Name the figures drawn below.
(a)
(b)
(c)
(d)
2. Draw the figures for the following
3. Name all the possible line segments in the figure.
Solution:
4. Write any five examples of angles that you have observed around.
Example: The angle formed when a scissor is opened.
Solution:
(i)
(ii)
(iii)
(iv)
(v)
5. Identify the following given angless as acute, right or obtuse.
(a)
(b)
(c)
(d)
(d)
6. Name all the possible angles you can find in the following figure. Which are acute, right, obtuse and straight angles?
Solution:
∠AOF, ∠FOE, ∠EOD, ∠DOC, ∠COB, ∠FOD, ∠EOC, ∠DOB –
∠AOE, ∠EOB, ∠FOC –
∠AOD, ∠AOC, ∠FOB –
∠AOB –
7 Which of the following pairs of lines are parallel? Why?
(a)
(b)
(c)
(d)
8 Which of the following lines are intersecting?
(a)
(b)
(c)
(d)