Chapter 6 Lines and Angles- MCQ Online Test 2 Class 9 Maths
1. The incorrect statement is:
a. Three lines are concurrent if and only if they have a common point.
b. A line segment has definite length.
c. Two lines drawn in a plane always intersect at a point.
d. One and only one line can be drawn passing through a given point and parallel to a given line.
2. If a transversal intersects two parallel lines, then which of the following alternatives is not true?
a. Each pair of corresponding angles is equal.
b. Each pair of co-interior angles is supplementary.
c. Each pair of co-interior angles is complementary.
d. Each pair of alternate interior angles is equal.
3. 
a. 12°
b. 10°
c. 18°
d. 15°
4. 
a. Alternate interior angles
b. Alternate exterior angles
c. Co-interior angles.
d. Corresponding angles
5. 
a. 180°
b. 90°
c. 120°
d. 150°
6. 
a. 50°
b. 40°
c. 120°
d. 130°
7. 
a. 50°
b. 60°
c. 70°
d. 40°
8. 
a. 70°
b. 80°
c. 90°
d. 100°
9. 
a. 25
b. 10
c. 15
d. 30
10. 
a. 55°
b. 65°
c. 70°
d. 75°
Chapter - 6 Lines and Angles Quiz-2 | Math Class 9th
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Question 1 of 10
1. Question
The incorrect statement is:
Correct
If two lines intersect then they must lie in one plane but its converse is not necessarily true.
Incorrect
If two lines intersect then they must lie in one plane but its converse is not necessarily true.
-
Question 2 of 10
2. Question
If a transversal intersects two parallel lines, then which of the following alternatives is not true?
Correct
Co-interior angles are supplementary not complementary.
Incorrect
Co-interior angles are supplementary not complementary.
-
Question 3 of 10
3. Question
Correct
7x + 2x + 3x = 180°
12x = 180°
x = 15°Incorrect
7x + 2x + 3x = 180°
12x = 180°
x = 15° -
Question 4 of 10
4. Question
Correct
∠a and ∠g are on alternate side and are exterior.
Incorrect
∠a and ∠g are on alternate side and are exterior.
-
Question 5 of 10
5. Question
Correct
∠1 = ∠5 (Corresponding angle)
∠7 = ∠5 (Vertically Opposite angle)
∠4 + ∠1 = 180° (Linear Pair)
∠4 + ∠7 = 180° (From above equations)
Incorrect
∠1 = ∠5 (Corresponding angle)
∠7 = ∠5 (Vertically Opposite angle)
∠4 + ∠1 = 180° (Linear Pair)
∠4 + ∠7 = 180° (From above equations)
-
Question 6 of 10
6. Question
Correct
∠2 = 180° – ∠1
∠2 = 180° – 50° = 130°Incorrect
∠2 = 180° – ∠1
∠2 = 180° – 50° = 130° -
Question 7 of 10
7. Question
Correct
∠FEC + ∠ECD = 180° (sum of 2 supplementary angles is 180°)
∠ECD = ∠180° – 150° = 30°
∠X = ∠BCE = ∠ECD
∠X = 30° + 30° = 60°
Incorrect
∠FEC + ∠ECD = 180° (sum of 2 supplementary angles is 180°)
∠ECD = ∠180° – 150° = 30°
∠X = ∠BCE = ∠ECD
∠X = 30° + 30° = 60°
-
Question 8 of 10
8. Question
Correct
x + 110° = 180° (Supplementary angles)
x = 70°
y + 150° = 180° (Supplementary angles)
y = 30°
∠ACD = 70° + 30° = 100°Incorrect
x + 110° = 180° (Supplementary angles)
x = 70°
y + 150° = 180° (Supplementary angles)
y = 30°
∠ACD = 70° + 30° = 100° -
Question 9 of 10
9. Question
Correct
2x – 20° + x + 100° = 110° (Exterior angle is equal to sum of its interior opposite angles)
3x = 110° – 100° + 20°
x = 10°
Incorrect
2x – 20° + x + 100° = 110° (Exterior angle is equal to sum of its interior opposite angles)
3x = 110° – 100° + 20°
x = 10°
-
Question 10 of 10
10. Question
Correct
∠QPR = ∠PRT = 400 (Alternate interior angles)
In △QPR
∠PQR + ∠QPR + ∠PRQ = 180° (Angle sum property)
65° + 40° + x = 180°
x = 180° – 40° – 65°
x = 75°Incorrect
∠QPR = ∠PRT = 400 (Alternate interior angles)
In △QPR
∠PQR + ∠QPR + ∠PRQ = 180° (Angle sum property)
65° + 40° + x = 180°
x = 180° – 40° – 65°
x = 75°