Question 10
The number of triangles in the given figure is
a) 10
b) 12
c) 13
d) 14

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Solution

By observing the figure,

The total number of triangles are

1. $Δ A B D$

2. $Δ A D C$

and similarly the rest of them, $Δ B D F$ , $Δ C D F$ , $Δ C F G$ , $Δ B E F$ , $Δ A B F$ , $Δ A C F$ , $Δ A F E$ , $Δ A F G$ , $Δ A B C$ , $Δ A E G$ , $Δ B C F$ .

So, there are total 13 triangles in the given figure.

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Question 14
In the given figure, AB=BC and AD =BD = DC.

The number of isosceles triangles in the figure is
a) 1
b) 2
c) 3
d) 4

Question 15
In the given figure, $∠ B A C$ = $90^{\circ}$ and AD $⊥$ BC.

The number of right-angled triangles in the figure is

a) 1
b) 2
c) 3
d) 4

Question 10
The number of triangles in the given figure is
a) 10
b) 12
c) 13
d) 14

Question 14
In the given figure, AB=BC and AD =BD = DC.

The number of isosceles triangles in the figure is
a) 1
b) 2
c) 3
d) 4

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