CBSE Class 7 Mathematics Parallel and Intersecting Lines MCQs Set D

Question. If angle 'a' and angle 'b' form a linear pair, then they must always add up to
(a) 90 degrees
(b) 180 degrees
(c) 360 degrees
(d) 120 degrees

Answer: B

Question. What is the measure of ∠b if ∠a is 60° in a linear pair?
(a) 120°
(b) 90°
(c) 60°
(d) 180°

Answer: A

Question. The ideal line in geometry does not have any
(a) Length
(b) Endpoints
(c) Thickness
(d) Angles

Answer: C

Question. In Fig 5.25, the corresponding angle of angle '3' (or 'c') is angle
(a) '4' (or 'd')
(b) '5' (or 'e')
(c) '7' (or 'g')
(d) '8' (or 'h')

Answer: C

Question. Geometry is useful in which of the following disciplines?
(a) Physics
(b) Art
(c) Engineering
(d) All of these

Answer: D

Question. If lines l and m are intersected by transversal t, and lines l and m are NOT parallel, what is true about the corresponding angles?
(a) They are complementary
(b) They must be supplementary
(c) They are unequal
(d) They are 90 degrees

Answer: C

Question. If two lines are not parallel, what can be said about their corresponding angles formed by a transversal?
(a) They are equal
(b) They are not equal
(c) They add up ecos 180°
(d) They are perpendicular

Answer: B

Question. When one line t intersects two different lines l and m, how many pairs of corresponding angles are formed?
(a) Two
(b) Three
(c) Four
(d) Eight

Answer: C

Question. Lines drawn on a table and lines drawn on a board may never meet, but they are not parallel because they do not lie on the same
(a) Room
(b) Surface
(c) Plane
(d) Line

Answer: C

Question. When two lines intersect, they form vertically opposite angles, and also they form adjacent angles. The adjacent angles are called
(a) Alternate angles
(b) Corresponding angles
(c) Linear pairs
(d) Right angles

Answer: C

Question. If corresponding angles formed by a transversal are equal, what can be said about the two lines?
(a) They are perpendicular
(b) They are parallel
(c) They are intersecting
(d) They are transversal

Answer: B

Question. In Figure 5.2, angle 'a' and angle 'd' are adjacent angles forming a straight line. Their sum is 180 degrees because they are
(a) Vertically opposite
(b) Complementary
(c) Linear pairs
(d) Alternate angles

Answer: C

Question. If Angle a + Angle b equals 180 degrees, it means Angle a and Angle b form a straight angle, which is a key property of
(a) Perpendicular lines
(b) Vertically opposite angles
(c) Linear pairs
(d) Alternate interior angles

Answer: C

Question. If two intersecting lines form four angles, say a, b, c, and d, which pair must be equal due to being vertically opposite?
(a) a and b
(b) a and d
(c) a and c
(d) b and c

Answer: C

Question. If angle a is 150 degrees, and it forms a linear pair with angle b, then the measure of angle b is calculated as 180° - 150°, which is
(a) 150 degrees
(b) 30 degrees
(c) 90 degrees
(d) 180 degrees

Answer: B

Question. What are corresponding angles?
(a) Angles that add up to 180°
(b) Angles in matching positions when a transversal intersects two lines
(c) Angles that are vertically opposite
(d) Angles that are perpendicular

Answer: B

Question. When measuring linear pairs using a protractor, sometimes the angles may not exactly add up to 180 degrees because of
(a) Incorrect line drawing
(b) Protractor misuse
(c) Variation in line thickness
(d) All of these

Answer: D

Question. If two lines intersect and all four angles formed are equal, then the measure of each angle is
(a) 45 degrees
(b) 60 degrees
(c) 90 degrees
(d) 180 degrees

Answer: C

Question. A pair of lines that intersect each other at right angles is called
(a) Parallel lines
(b) Intersecting lines
(c) Perpendicular lines
(d) Transversals

Answer: C

Question. How many distinct angle measures are possible when a transversal intersects two lines?
(a) Eight
(b) Six
(c) Four
(d) Two

Answer: C