Page 161 - Maths Skills - 7

Lines and Angles 159

10. Find the values of x and y in Fig. It is given that AB || CD and transversal l intersects them.

(i) (ii)

ASSESSMENT TIME

COMPETENCY BASED QUESTIONS 4. The ________________ between two parallel
lines is the same everywhere.
A. Multiple-Choice Questions 5. If two parallel lines are cut by a transversal,
1. The sum of angles of a linear pair is: the corresponding angles thus formed are
(i) 90° (ii) 120° ________________ in measure.
(iii) 180° (iv) 360° C. Write ‘T’ for true and ‘F’ for false statements

2. If two parallel lines are intersected by a
transversal, then a pair of alternate angles is 1. Linear pair of angles is always adjacent.

(i) equal (ii) complementary
(iii) supplementary (iv) none of these 2. If a transversal cuts two parallel lines, the sum of
two corresponding angles is equal to 180°.
3. Two lines perpendicular to the same line in a
plane are: 3. Two lines in the same plane are parallel, if they
(i) intersecting (ii) parallel never intersect each other.

(iii) concurrent (iv) none of these 4. If two parallel lines are intersected by a transversal,
4. If two parallel lines are intersected by a then the sum of the interior angles on the same
transversal, then a pair of corresponding angles side of the transversal is equal to 180°.
are:

(i) complementary (ii) supplementary 5. If two lines intersect, then vertically opposite
angles are unequal.
(iii) equal (iv) unequal
5. A line which intersects two or more given lines D. Case Study Based Questions
in a plane at different points is called a:
(i) parallel line (ii) concurrent line Dhruv and Shobhit were playing a game based
upon parallel lines and the angles formed due to
(iii) transversal (iv) none of these transversal line.
l
B. Fill in the Blanks
1. Lines parallel to the same line are ___________ 2 m
to each other. 1 4 3
2. Supplement of ___________ is 0°. 5 6
3. The angles whose arms do not contain the 8 7
segment of the transversal in between the two n
lines are called ________________.