MCQ Practice – Class 6 to 10

Q1. The sides of two similar triangles are in ratio 4:7. The ratio of their perimeters is:

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

Q2. In triangle ABC, DE is parallel to BC, AD = 2 cm, DB = 4 cm. Then AB:AD =

A. 1:3 B. 3:1 C. 2:3 D. 1:2

Q3. Basic Proportionality Theorem (BPT) is also known as:

A. Menelaus theorem B. Thales theorem C. Pythagoras theorem D. Mid-point theorem

Q4. If two triangles are similar, the ratio of their areas is equal to:

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

Q5. If in ΔABC, angle C is a right angle, then the side AB is:

A. Height B. Base C. Hypotenuse D. Median

Q6. If two triangles are similar, the ratio of their perimeters is equal to:

A. Ratio of their altitudes squared B. Ratio of their medians squared C. Ratio of their corresponding sides D. Ratio of their areas

Q7. If ΔABC ~ ΔDEF and angle A = 50°, angle B = 60°, then angle D equals:

A. 30° B. 60° C. 50° D. 70°

Q8. 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. 4:1 C. 2:1 D. 1:2

Q9. In triangle ABC, if DE is drawn parallel to BC cutting AB at D and AC at E, then:

A. AD/DB = AE/EC B. AB/AD = AC/AE C. AD/AB = DE/BC D. AD/AB = AE/AC

Q10. Two triangles are similar but not congruent when:

A. They have equal perimeters B. They have same size but different shape C. They have equal areas D. They have same shape but different sizes

Quiz – Triangles