In ABC - AB - AC and - B -40- - What is the value of - C -A- 6 m- equilateral triangleB- 6 m- Isosceles triangleC- 4 m- equilateral triangleD- 4 m- Isosceles triangle

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Standard VI

Mathematics

Equilateral Triangle

In ABC , AB =...

Question

In $△ A B C$ , $A B = A C$ and $∠ B = 40^{\circ}$ . What is the value of $∠ C$ ?

6m, equilateral triangle

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4 m, Isosceles triangle

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6 m, Isosceles triangle

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4 m, equilateral triangle

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Solution

The correct option is C
6 m, Isosceles triangle

Since AB = AC, the angles opposite to these sides will also be equal.

Hence, $∠ B = ∠ C$

$\Rightarrow ∠ C = 40^{\circ}$

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In △ABC, AB=AC and ∠B=40∘. What is the value of ∠C?​​​​​​​

The correct option is C 6 m, Isosceles triangle Since AB = AC, the angles opposite to these sides will also be equal. Hence, ∠B=∠C ⇒∠C=40∘

In $△ A B C$ , $A B = A C$ and $∠ B = 40^{\circ}$ . What is the value of $∠ C$ ?

The correct option is C
6 m, Isosceles triangle

Since AB = AC, the angles opposite to these sides will also be equal.

Hence, $∠ B = ∠ C$

$\Rightarrow ∠ C = 40^{\circ}$