The given triangle is ___________

(a)

a right angled triangle

(b)

an equilateral triangle

(c)

a scalene triangle

(d)

an obtuse angled triangle

If all angles of a triangle are less than a right angle, then it is called ______________.

(a)

an obtuse angled triangle

(b)

a right angled triangle

(c)

an isosceles right angled triangle

(d)

an acute angled triangle

If two sides of a triangle are 5 cm and 9 cm, then the third side is ______________

(a)

5 cm

(b)

3 cm

(c)

4 cm

(d)

14 cm

The angles of a right angled triangle are

(a)

acute, acute, obtuse

(b)

acute, right, right

(c)

right, obtuse, acute

(d)

acute, acute, right

An equilateral triangle is

(a)

an obtuse angled triangle

(b)

a right angled triangle

(c)

an acute angled triangle

(d)

a scalene triangle

Which of the following correctly describes the given triangle?

(a)

It is a right isosceles triangle.

(b)

It is an acute isosceles triangle.

(c)

It is an obtuse isosceles triangle.

(d)

It is an obtuse scalene triangle.

Which of the following is not possible?

(a)

An obtuse isosceles triangle

(b)

An acute isosceles triangle

(c)

An obtuse equilateral triangle

(d)

An acute equilateral triangle

Which of the following can be the sides of an isosceles triangle?

(a)

6cm, 3cm, 3cm

(b)

5cm, 2cm, 2cm

(c)

6cm, 6cm,7cm

(d)

4cm, 4cm, 8cm

Every triangle has at least __________ acute angles.

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two

A triangle in which none of the sides equal is called a ______________

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scalene triangle

In an isosceles triangle ______________ angles are equal.

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two

The sum of three angles of a triangle is ___________.

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180°

A right angled triangle with two equal sides is called _____________.

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isosceles right angled triangle

No sides are equal

(1)

Scalene triangle

One right angle

(2)

Obtuse angled triangle

One obtuse angle

(3)

Equilateral triangle

Two sides of equal length

(4)

Isosceles triangle

All sides are equal

(5)

Right angled triangle