Among the triangles listed below, how many of them have the sum of interior angles equal to 180°?

Isosceles triangle

Right triangle

Scalene triangle

Acute triangle

Equilateral triangle

Obtuse triangle

Isosceles Right triangle

Isosceles Obutuse triangle

8

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Solution

The correct option is A 8
The sum of all the interior angles of a triangle is always 180°.
$∴$ Among the given list of all different types of triangles, all have the sum of interior angles equal to $180^{\circ}$ .

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(b) An obtuse angled scalene triangle
(c) A right angled isosceles triangle.
(d) An acute angled scalene triangle.
(e) An obtuse angled isosceles triangle.

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Question 14

If in an isosceles triangle, each of the base angle is $40^{\circ}$ , then the triangle is

a) Right angled triangle
b) Acute angled triangle
c) Obtuse-angled triangle
d) Isosceles right-angled triangle

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Among the triangles listed below, how many of them have the sum of interior angles equal to 180°? Isosceles triangle Right triangle Scalene triangle Acute triangle Equilateral triangle Obtuse triangle Isosceles Right triangle Isosceles Obutuse triangle 8

The correct option is A 8The sum of all the interior angles of a triangle is always 180°. ∴ Among the given list of all different types of triangles, all have the sum of interior angles equal to 180∘.

Among the triangles listed below, how many of them have the sum of interior angles equal to 180°?

Isosceles triangle

Right triangle

Scalene triangle

Acute triangle

Equilateral triangle

Obtuse triangle

Isosceles Right triangle

Isosceles Obutuse triangle

8

The correct option is A 8
The sum of all the interior angles of a triangle is always 180°.
$∴$ Among the given list of all different types of triangles, all have the sum of interior angles equal to $180^{\circ}$ .