If ratio of sides of two similar triangles is 5 : 4 then ratio of their perimeters is
3 : 4
5 : 4
1 : 2
4 : 5
ΔABC is such that AB = 3cm, BC = 2 cm and CA = 2.5 cm. If ΔDEF ~ ΔABC and EF = 4 cm, then perimeter of ΔDEF is
17.5 cm
15 cm
30 cm
22.5 cm
If ratio of areas of two similar triangle is 9 : 16 then ratio of their medians is
1 : 4
4 : 3
3 : 1
In figure, DE || BC, AD = 2cm, BD = 2.5 cm, AE = 3.2 cm. Determine AC.
6
4
6.2
7.2
If a line is drawn parallel to one side of a triangle intersecting the other two sides, then the other two sides are
Equal
Perpendicular
Divided in the same ratio
Parallel
What value (s) of x will make DE || AB in the given figure.
-2
3
2
In the given figure ΔABC and ΔDEF are similar, BC = 3 cm, EF = 4 cm and area of ΔABC = 54 cm2. The area of Δ DEF is
72 sq cm
96 sq cm
36 sq cm
144 sq cm
Two poles of height 6 m and 11 m stand on a plane ground. If the distance between their feet is 12 m, find the distance between their tops.
10 m
11 m
12 m
13 m
ABC and BDE are two equilateral triangles such that D is the midpoint of BC. Ratio of the areas of triangles ABC and BDE is.
2 : 1
4 : 1
In a triangle ABC, AB = 3.9 cm, AC = 5.2 cm and the bisector of ∠A meets BC at D. If DC = 2.8 cm, then find BD.
2.4 cm
2.3 cm
2.1 cm
1.4 cm