Triangle and its properties

A triangle has _______ vertices.

• 3

• 4

• 5

• 1

An obtuse-angled triangle has ______ sides.

• 2

• 3

• 4

• 1

If each angle of a triangle is less than 90^o, then it is a/an

• obtuse-angled triangle

• Right-angled triangle

• Acute-angles triangle

• Equilateral triangle

If two angles of a triangle is 60^o each, then the third angle is

• 90^o

• 60^o

• 45^o

• 30^o

The sum of three angles of a triangle is undefined.

• True

• False

A triangle in which all the 3 sides are equal is called a/an

• Scalene Triangle

• Acute-angled triangle

• Equilateral Triangle

• Obtuse angles triangle

A triangle in which any 2 sides of a triangle are equal is called a/an

• Isosceles Triangle

• Equilateral Triangle

• Scalene Triangle

• Right-angled Triangle

In an equilateral triangle, each angle measure _______.

• 30^o

• 60^o

• 90^o

• 45^o

Every equilateral triangle is a/an

• Right-angled triangle

• Acute-angled Triangle

• Obtuse-angled Triangle