Below you will find MCQ Questions of Chapter 7 Triangles Class 9 Maths Free PDF Download that will help you in gaining good marks in the examinations and also cracking competitive exams. These Class 9 MCQ Questions with answers will widen your skills and understand concepts in a better manner.
MCQ Questions for Class 9 Maths Chapter 7 Triangles with answers
1. Two equilateral triangles are congruent when:
(a) Their areas are proportional
(b) Their sides are equal
(c) Their sides are proportional
(d) Their angles are equal
► (b) Their sides are equal
2. In ΔABC and ΔPBC, AB = BP and AC = PC. Can you say whether the triangles are congruent to each other or not:
(a) Yes, by ASA Congruence theorem they are congruent
(b) Yes, by SAS Congruence theorem they are congruent
(c) No, they are not congruent
(d) Yes, by SSS Congruence theorem they are congruent
► (d) Yes, by SSS Congruence theorem they are congruent
3. If two triangles ABC and PQR are congruent under the correspondence A ↔ P, B ↔ Q and C ↔ R, then symbolically, it is expressed as
(a) ΔABC ≅ ΔPQR
(b) ΔABC = ΔPQR
(c) ΔABC and ΔPQR are scalene triangles
(d) ΔABC and ΔPQR are isosceles triangles
► (a) ΔABC ≅ ΔPQR
4. In the given figure, AB = AC, AD = AE = 5 cm and DC = 8 cm. Length of EB is.
(a) 3 cm
(b) 8 cm
(c) 7 cm
(c) 5 cm
► (b) 8 cm
5. The figure shows that O is the centre of the circle and XOY is a diameter. If XZ is any other chord of the circle, then
(a) XY < XZ
(b) XY = XZ
(c) XY > XZ
(c) XY = OZ
► (c) XY > XZ
6. If two sides of a triangle are equal, the angles opposite to these sides are
(a) supplementary
(b) equal
(c) right angles
(c) not equal
► (b) equal
7. Two sides of triangle are of lengths 5 cm and 1.5 cm. The length of the third side of the triangle cannot be
(a) 3.6 cm
(b) 3.4 cm
(c) 3.8 cm
(d) 4.1 cm
► (b) 3.4 cm
8. If ΔABC ≌ ΔPQR then which of the following is true:
(a) CA = RP
(b) AB = RP
(c) AC = RQ
(d) CB = QP
► (a) CA = RP
9. D is a Point on the Side BC of a △ABC such that AD bisects ∠BAC then:
(a) BD = CD
(b) CD > CA
(c) BD > BA
(d) BA > BD
► (d) BA > BD
10. The perimeter of a triangle is _____ the sum of its medians.
(a) less than
(b) greater than twice
(c) equal to
(d) greater than
► (d) greater than
11. In the figure, AC > AB and D is a point on AC such that AB = AD, then
(a) BC = 1/2 AD
(b) BC > CD
(c) BC = AD
(d) BC < AD
► (b) BC > CD
12. If AB = 8 cm, BC = 15 cm and CA = 19 cm. State whether these sides form a triangle ΔABC.
(a) Yes, they form a triangle as sum of two sides is greater than the third side
(b) Yes, they form an isosceles triangle
(c) Yes, they form an right angled triangle
(d) No, a triangle cannot be formed
► (a) Yes, they form a triangle as sum of two sides is greater than the third side
13. Choose the incorrect statement
(a) Sides opposite to equal angles are equal in a triangle
(b) If the altitude from one vertex of a triangle bisects the opposite side, then the triangle is isosceles
(c) If the bisector of the vertical angle of the triangle bisects the base of the triangle, then the triangle is isosceles
(d) All the altitudes of an isosceles triangle are equal.
► (d) All the altitudes of an isosceles triangle are equal.
14. A triangle can have:
(a) Two obtuse angles
(b) Two acute angles
(c) Two right angles
(d) All angles more than 60°
► (b) Two acute angles
15. PQRS is a parallelogram, if the two diagonals are equal, then the measure of PQR is:
(a) 30°
(b) 90°
(c) 60°
(d) 120°
► (b) 90°
16. In PQR, PQ = PR and R = 65°, then P = ____.
(a) 75°
(b) 50°
(c) 40°
(d) 120°
► (b) 50°
17. In △ABC, ∠A = 35∘ and ∠B = 65∘, then the longest side of the triangle is:
(a) AC
(b) BC
(c) AB
(d) None of these
► (c) AB
18. In ΔABC if AB = BC then:
(a) ∠A < ∠C
(b) ∠C > ∠A
(c) ∠A = ∠C
(d) ∠B > ∠C
► (c) ∠A = ∠C
19. ABC ≅ △PQR. If AB=5 cm, and then which of the following is true?
(a) QR = 5 CM, ∠R= 60°
(b) QP = 5 cm, ∠P= 60°
(c) QP = 5cm, ∠R = 60°
(d) QR = 5 CM, ∠Q = 60°
► (b) QP = 5 cm, ∠P= 60°
20. Triangle ABC is congruent to triangle DEF. Which side is congruent to side BC?
(a) DE
(b) DF
(c) EF
(d) None of the these
► (c) EF
21. P is a point on side BC of a △ABC such that AP bisects △BAC. Then
(a) BA > BP
(b) CP < CA
(c) BP > BA
(d) BP = CP
► (a) BA > BP
22. In an isosceles right angled triangle, the measures of the acute angles are
(a) 40°, 50°
(b) 35°, 55°
(c) 45°, 45°
(d) 60°, 30°
► (c) 45°, 45°
Hope the given MCQ Questions will help you in cracking exams with good marks. These Triangles MCQ Questions will help you in practising more and more questions in less time.