SEBA Class 9 Mathematics MCQ Chapter 6 Linear and Angles Question Answer in English Medium, Class 9 General Maths Multiple Choice Question Answer in English to each chapter is provided in the list so that you can easily browse throughout different chapters SEBA Class 9 Mathematics MCQ Chapter 6 Linear and Angles Notes and select need one.
SEBA Class 9 Mathematics MCQ Chapter 6 Linear and Angles
Also, you can read the SCERT book online in these sections Solutions by Expert Teachers as per SCERT (CBSE) Book guidelines. These solutions are part of SCERT All Subject Solutions. Here we have given Assam SEBA Class 9 Mathematics MCQ Chapter 6 Linear and Angles Solutions for All Subject, You can practice these here.
Linear and Angles
Chapter – 6
| MCQ |
1. The sum of two complementary angles is-
(a) 180°
(b) 360°
(c) 90°
(d) All of the above
Ans: (c) 90°
2. The sum of two supplementary angle is:
(a) 90°
(b) 360°
(c) 110°
(d) 180°
Ans: (d) 180°
3. An angle which measures 180 degrees is called a:
(a) Acute angle
(b) Right angle
(c) Obtuse angle
(d) Straight angle
Ans: (d) Straight angle
4. If two complementary angles are in the ratio 13 : 5, then the angles are:
(a) 13xo, 5xo
(b) 25o, 65o
(c) 65o, 25o
(d) 65o, 35o
Ans: (c) 65o, 25o
5. In ΔABC, the bisectors of ∠ABC and ∠BCA intersect each other at O. The measure of ∠BOC is:
(a) 90° + ∠A
(b) 90° + ∠A /2
(c) 180 – ∠A
(d) 90° – ∠A / 2
Ans: (b) 90° + ∠A /2
6. In the given figure, if X : Y = 1.4, then value of x and y are respectively:
(a) 36° and 144°
(b) 118° and 72°
(c) 144° and 36°
(d) 72° and 18°
Ans: (a) 36° and 144°
7. An angle greater than 90 degrees but less than 180 degrees is called:
(a) Acute angle
(b) Right angle
(c) Obtuse angle
(d) Straight angle
Ans: (c) Obtuse angle.
8. The value of x in the equation 5x – 3 = 2x + 9 is:
(a) 2
(b) 3
(c) 4
(d) 5
Ans: (c) 4
9. The angle of a triangle are in the ratio 5 : 3 : 7, the triangle is:
(а) an acute-angled triangle
(b) an obtuse angled triangle
(c) an right angled triangle
(d) an isosceles triangle.
Ans: (а) an acute-angled triangle.
10. The angle of a triangle is in the ratio 2:3:4. The measure of the greatest angle is:
(a) 100°
(b) 60°
(c) 80°
(d) 60°
Ans: (c) 80°
11. If one angle of triangle is equal to the sum of the other two, then the triangle is:
(a) an isosceles triangle
(b) an obtuse-angled triangle
(c) an equilateral triangle
(d) a right triangle
Ans: (d) a right triangle
12. If the lines represented by the equations ax + by + c = 0 and bx – ay + c = 0 are perpendicular, then:
(a) a = b
(b) a + b = 0
(c) ab = 1
(d) ab = -1
Ans: (d) ab = -1
13. The angle which is twice its supplement is:
(a) 60°
(b) 120°
(c) 150°
(d) 180°
Ans: (b) 120
14. One of the angles of a triangle is 75°. If the difference of other two is 35º, then the largest angle of other two angles has a measure:
(a) 80°
(b) 75°
(c) 70°
(d) 135°
Ans: (c) 70°
15. A straight angle:
(a) is greater than 90° but less than 180°
(b) is exactly equal to 90°
(c) measure between 0º and 90°
(d) is exactly equal to 180°
Ans: (d) is exactly equal to 180°
16. The angles of a quadrilateral are respectively equal to 110°, 40° and 50°. Find the fourth angle.
(a) 120°
(b) 160°
(c) 170°
(d) 180°
Ans: (b) 160°
17. The side opposite the right angle in a right-angled triangle is called the:
(a) Adjacent side
(b) Hypotenuse
(c) Opposite side
(d) Base
Ans: (b) Hypotenuse
18. The sum of the exterior angles of any triangle is:
(a) 90 degrees
(b) 180 degrees
(c) 360 degrees
(d) 270 degrees
Ans: (c) 360 degrees
19. I ‖ m and PQ is a transversal. If EM and FL are bisectors for a pair of alternate angles so formed then EM and FL are:
(a) Intersecting lines
(b) Parallel lines
(c) Equal lines
(d) None of these
Ans: (b) Parallel lines
20. In the figure PQ || RS. If angle ∠OPQ = 120° and angle ∠ORS = 110° then angle ∠POR is equal to,
(a) 40°
(b) 50°
(c) 60°
(d) 90°
Ans: (b) 50°
