Punjab State Board PSEB 9th Class Maths Book Solutions Chapter 7 Triangles MCQ Questions with Answers.

## PSEB 9th Class Maths Chapter 7 Triangles MCQ Questions

Multiple Choice Questions and Answer

Answer each question by selecting the proper alternative from those given below each question to make the statement true:

Question 1.

In ∆ ABC, ∠A = ∠C, AC = 5 and BC = 4. Then, the perimeter of ∆ ABC is ……………. .

A. 9

B. 14

C. 13

D. 15

Answer:

C. 13

Question 2.

In ∆ PQR, PQ = PR, QR is extended to S and ∠PRS = 110°. Then, ∠PQR = ……………… .

A. 30°

B. 50°

C. 80°

D. 70°

Answer:

D. 70°

Question 3.

In ∆ ABC and ∆ DEF, AB = DE, BC = EF and ∠B = ∠E. If the perimeter of ∆ ABC is 20, then the perimeter of ∆ DEF is ……………. .

A. 10

B. 20

C. 15

D. 40

Answer:

B. 20

Question 4.

In ∆ ABC and ∆ PQR, AB = PQ, ∠A = ∠P and ∠B = ∠Q. If ∠A + ∠C = 130°, then ∠Q = …………….. .

A. 65°

B. 130°

C. 50°

D. 100°

Answer:

C. 50°

Question 5.

In ∆ PQR, ∠P = ∠Q = ∠R. If PQ = 6, then the perimeter of ∆ PQR is ………………. .

A. 12

B. 9

C. 18

D. 24

Answer:

C. 18

Question 6.

In ∆ ABC, AB < AC. Then …………… holds good.

A. ∠A < ∠B

B. ∠B < ∠C

C. ∠C < ∠A

D. ∠C < ∠B

Answer:

D. ∠C < ∠B

Question 7.

In ∆ PQR, ∠R > ∠Q. Then, ………………. holds good.

A. PQ > PR

B. QR > PQ

C. PR > PQ

D. PQ > QR

Answer:

A. PQ > PR

Question 8.

In ∆ ABC, AB > BC and BC > AC. Then, the smallest angle of ∆ ABC is …………………. .

A. ∠A

B. ∠C

C. ∠B

D. ∠A or ∠C

Answer:

C. ∠B

Question 9

………………….. cannot be the measures of the sides of a triangle.

A. 10, 12, 14

B. 2, 3, 4

C. 8, 9, 10

D. 2, 4, 10

Answer:

D. 2, 4, 10

Question 10.

In ∆ PQR, PQ = 4, QR = 6 and PR = 5. Then, …………….. is the angle with greatest measure in ∆ PQR.

A. ∠P

B. ∠Q

C. ∠R

D. ∠QRP

Answer:

A. ∠P

Question 11.

In ∆ XYZ, ∠X = 45° and ∠Z = 60°. Then, …………….. is the longest side of ∆ XYZ.

A. XY

B. YZ

C. XZ

D. XY or YZ

Answer:

C. XZ

Question 12.

In ∆ ABC, ∠B = 30° and BC is extended to D. If ∠ACD = 110°, then the longest side of ∆ ABC is ………………. .

A. AB

B. BC

C. CA

D. AB or AC

Answer:

B. BC

Question 13.

In ∆ ABC, AB = 4 and BC = 7, Then, ……………… holds good.

A. AC < 7

B. AC > 4

C. 4 < AC < 7

D. 3 < AC < 11

Answer:

D. 3 < AC < 11

Question 14.

In ∆ PQR, PQ = 3 and QR = 7. Then, …………….. holds good.

A. PR = 4

B. PR = 10

C. 10 > PR > 4

D. 7 > PR > 3

Answer:

C. 10 > PR > 4

Question 15.

In ∆ ABC, the bisectors of ∠B and ∠C intersect at I. If ∠A = 70°, then ∠BIC = ………………… .

A. 35°

B. 75°

C. 100°

D. 125°

Answer:

D. 125°