Question

The three side of A Triangle AB BC, and
CA are 7. 10, and 12 respectively
AB is extended to D and AD = 28cm
is extended to E and BE = 20cm
is extended to f and cf = 36 cm
what is the area
of triange DEF?​

Answer 1

Answer:

In the given figure, ∠BAC=120∘ and AD is the bisector of ∠BAC . If

(AD)(AB)

BD

=

AE

EC

(AE+EC) and ∠EDC=∠ECD, what is the ratio of ∠B and ∠C ?

[1] 1:1

[2] 1:2

[3] 2:3

[4] 5:6

Answer & Solution

Question 2:

If the two sides of a triangle are 50 and 20 respectively, and the area of the triangle is 150. Find the length of the third side.

[1] 40

√

3

m

[2] 40

√

2

m

[3] 30

√

3

m

[4] 40

√

2

m

Answer & Solution

Question 3:

X, Y and Z are points on the sides AB, BC and AC of the triangle ABC, such that AX : XB = 4:3 BY : YC = 2: 3 and CZ : ZA = 2:1. Find the ratio of the area of the triangle XYZ to that of the triangle ABC.

[1]

4

35

[2]

4

21

[3]

5

21

[4]

3

14