In a ABC - - A -120- - B -40- and - C -20- - What type of triangle is this-A- Acute Angled TriangleB- Obtuse Angled TriangleC- Scalene TriangleD- Isosceles Triangle

The correct options are B Obtuse Angled Triangle C Scalene Triangle Since, ∠ A=120^∘ which is greater than 90^∘, the triangle is obtuse angled triangle. Also, ...

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Standard VI

Mathematics

Angle Sum Property of Triangle

In a ABC , ∠ ...

Question

In a $△ A B C, ∠ A = 120^{\circ}, ∠ B = 40^{\circ}$ and $∠ C = 20^{\circ}$ . What type of triangle is this?

Acute Angled Triangle

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Obtuse Angled Triangle

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Scalene Triangle

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Isosceles Triangle

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Solution

The correct options are
B
Obtuse Angled Triangle

C
Scalene Triangle

Since, $∠ A = 120^{\circ}$ which is greater than $90^{\circ}$ , the triangle is obtuse angled triangle.

Also, all the angles are different, so, the sides are unequal.

Hence, the triangle is Obtuse Angled Scalene Triangle.

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In a △ABC, ∠A=120∘, ∠B=40∘ and ∠C=20∘. What type of triangle is this?

The correct options are B Obtuse Angled Triangle C Scalene Triangle Since, ∠A=120∘ which is greater than 90∘, the triangle is obtuse angled triangle. Also, all the angles are different, so, the sides are unequal. Hence, the triangle is Obtuse Angled Scalene Triangle.

In a $△ A B C, ∠ A = 120^{\circ}, ∠ B = 40^{\circ}$ and $∠ C = 20^{\circ}$ . What type of triangle is this?

The correct options are
B
Obtuse Angled Triangle

C
Scalene Triangle

Since, $∠ A = 120^{\circ}$ which is greater than $90^{\circ}$ , the triangle is obtuse angled triangle.

Also, all the angles are different, so, the sides are unequal.

Hence, the triangle is Obtuse Angled Scalene Triangle.