5 marks

Question 15 Marks

Think and write an object having

Parallel lines (1) __________ (2) __________ (3) __________
Perpendicular lines (1) __________ (2) __________ (3) __________
Intersecting lines (1) __________ (2) __________ (3) __________

Answer

Parallel lines (1) Legs of the table (2) Railway track (3) Edges of the scale
Perpendicular lines (1) Adjacent sides of a Board (2) Cross bars of windows (3) Adjacent sides of the textbook
Intersecting lines (1) Cross bars of windows (2) Ladder (3) Blades of a scissor

Question 25 Marks

Name the following angle as shown in the figure.
(i) ∠1 =
(ii) ∠2 =
(iii) ∠3 =
(iv) ∠1 + ∠2 =
(v) ∠2 + ∠3 =
(vi) ∠1 + ∠2 + ∠3 =

Answer

(i) $\angle 1=\angle CBD$ or $\angle DBC$
(ii) $\angle 2=\angle DBE$ or $\angle EBD$
(iii) $\angle 3=\angle A B E$ or $\angle E B A$
(iv) $\angle 1+\angle 2=\angle C B E$ or $\angle E B C$
(v) $\angle 2+\angle 3=\angle A B D$ or $\angle D B A$
(vi) $\angle 1+\angle 2+\angle 3=\angle A B C$ or $\angle C B A$

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Question 35 Marks

From the given figure, name
(i) all pairs of parallel lines.
(ii) all pairs of intersecting lines.
(iii) pair of lines whose point of intersection is ' $V$ '.
(iv) point of intersection of the lines ' $I _2$ ' and ' $I _3$ '.
(v) point of intersection of the lines ' $I_1$ ', and ' $I_5$ '
<

Answer

(i) $I_3$ and $I_4, I_4$ and $I_5, I_3$ and $I_5$
(ii) $I_1$ and $I_2, I_1$ and $I_3, I_1$ and $I_4, I_1$ and $I_5, I_2$ and $I_3, I_2$ and $I_4, I_2$ and $I_5$
(iii) $I_1$ and $I_2$
(iv) $Q$
(v) $U$

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