Chapter 6 Triangles- MCQ Online Test 1 Class 10 Maths

1.Triangle ABC is such that AB = 3 cm, BC = 2 cm and CA = 2.5 cm. Triangle DEF is similar to ΔABC. If EF = 4 cm, then the perimeter of ΔDEF is :
10 cm
15 cm
9.5 cm
20 cm

2. In ΔABC, AB = 3 cm, AC = 4 cm and AD is the bisector of ∠A. Then, BD : DC is :
6 : 5
3 : 4
3 : 8
7 : 2

3. In an equilateral triangle ABC, if AD ⊥ BC, then:
2AB2 = 3AD2
4AB2 = 3AD2
3AB2 = 4AD2
None of the above

4. ABC is a triangle and DE is drawn parallel to BC cutting the other sides at D and E. If AB = 3.6 cm, AC = 2.4 cm and AD = 2.1 cm, then AE is equal to :
1.5 cm
1.8 cm
1.4 cm
1.2 cm

5. The line segments joining the mid points of the sides of a triangle form four triangles each of which is :
An isosceles triangle
Congruent to the original triangle
Similar to the original triangle
An equilateral triangle

6. In ΔABC and ΔDEF, ∠A = 50°, ∠B = 70°, ∠C = 60°, ∠D = 60°, ∠E = 70°, ∠F = 50°, then ΔABC is similar to:
ΔEDF
ΔDFE
ΔDEF
ΔFED

7. D, E, F are the mid points of the sides BC, CA and AB respectively of ΔABC. Then ΔDEF is congruent to triangle
AEF
AFE, BFD, CDE
ABC
BFD, CDE

8. If in the triangles ABC and DEF, angle A is equal to angle E, both are equal to 40°, AB : ED = AC : EF and angle F is 65°, then angle B is :-
45°
75°
65°
70°

9. The ratio of the corresponding sides of two similar triangles is 1 : 3. The ratio of their corresponding heights is :
2 : 3
1 : 4
1 : 3
4 : 3

10. The areas of two similar triangles are 49 cm2 and 64 cm2 respectively. The ratio of their corresponding sides is:
64: 49
7 : 8
49 : 64
none of these

[WpProQuiz 871]