Chapter 6 Triangles- MCQ Online Test 2 Class 10 Maths

1.In triangle PQR length of the side QR is less than twice the length of the side PQ by 2 cm. Length of the side PR exceeds the length of the side PQ by 10 cm. The perimeter is 40 cm. The length of the smallest side of the triangle PQR is :
7 cm
10 cm
8 cm
6 cm

2. In the given figure ΔABO ∼ ΔDCO. If CD = 2cm, AB = 3 cm, OC = 3.2 cm, OD = 2.4 cm, then
OA = 3.2 cm, OB = 4.5 cm
OA = 3.6 cm, OB = 4.8 cm.
OA = 3.5 cm, OB = 4 cm.
OA = 4.6 cm, OB = 3.5 cm.

3. In the given figure, AB || DE and BD || EF. Then
BC2 = AB.CE.
AB2 = AC.DE.
DC2 = CF×AC.
none of these

4. Two isosceles triangles have equal angles and their areas are in the ratio 16 : 25. Then, the ratio of their corresponding heights is
3/5
4/5
4/7
2/5

5. If PQR is an isosceles triangle and M is a point on QR such that PM⊥QR, then
PQ² − PR² = QM² − MR²
PQ² − PM² = QM² −MR²
PQ² + PM² = QM × MR
PQ² − PM² = QM × MR

ΔFDE∼ΔCAB.
ΔCBA∼ΔFDE
ΔFDE∼ΔABC.
ΔBCA∼ΔFDE

7. In trapezium ABCD, if AB||DC, AB = 9 cm, DC = 6 cm and BD = 12 cm, then BO is equal to
7.5 cm.
7.2 cm.
7.7 cm.
7.4 cm.

8. In an equilateral triangle ABC, if AD⊥BC, then
5AB² = 4AD²
4AB² = 3AD²
2AB² = 3AD²
3AB² = 4AD²

9. If ΔABC ∼ ΔPQR such that AB = 1.2 cm, PQ = 1.4 cm, then
9/49
36/49
3/17
12/13

10. Two poles of height 8 m and 13 m are standing 12 m apart. The distance between their tops is
13 m
23 m
15 m
21 m