MCQ Practice – Class 6 to 10

Q1. If ΔABC ~ ΔPQR and AB/PQ = 3/5, then area(ABC):area(PQR) =

A. 9:25 B. 3:5 C. 25:9 D. 5:3

Q2. If two triangles are similar, the ratio of their areas is equal to:

A. Square of the ratio of their corresponding sides B. Ratio of their sides C. Ratio of their perimeters only D. Cube of the ratio of their sides

Q3. Pythagoras theorem is applicable to:

A. Right angled triangle B. Any triangle C. Only acute triangle D. Only obtuse triangle

Q4. If two right triangles have equal hypotenuse and one equal acute angle, they are:

A. Congruent B. Similar C. Only isosceles D. Neither similar nor congruent

Q5. Two triangles are congruent if they have:

A. Same shape and same size B. Same shape but not same size C. Equal areas only D. Equal perimeters only

Q6. If ΔABC ~ ΔDEF and BC/EF = 2, then any corresponding altitude of ABC to that of DEF will be in ratio:

A. 2:2 B. 1:2 C. 4:1 D. 2:1

Q7. In SAS similarity, we use two sides and:

A. One included angle B. Any two angles C. One altitude D. Right angle

Q8. If the sides of a right triangle are 5 cm, 12 cm, 13 cm, then the hypotenuse is:

A. 5 cm B. None of these C. 12 cm D. 13 cm

Q9. The sides of two similar triangles are in ratio 4:7. The ratio of their perimeters is:

A. 16:49 B. 2:3 C. 4:7 D. 7:4

Q10. If ΔABC ~ ΔDEF and angle A = 50°, angle B = 60°, then angle D equals:

A. 50° B. 70° C. 30° D. 60°

Quiz – Triangles