The Triangle and its Properties

The total measure of the three angles of a triangle is

• 90 degree

• 120 degree

• 150 degree

• 180 degree

Let ABC is a right angle triangle at B. If AB = 5 cm and BC = 12 cm then the length of AC is

• 5 cm

• 10 cm

• 12 cm

• 13 cm

The sum of length of any two sides of a triangle is

• Greater than the third side

• Less than the third side

• Equal to the third side

• None of these

 

The triangle whose lengths of sides are 3 cm, 4 cm, 5 cm is a __________.

• obtuse-angled triangle

   

• acute-angled triangle

• right-angled triangle

• None of these

In a right angle triangle, the angles other than the right angle are

• obtuse

• right angle

• acute

• Straight

 

If one angle of a triangle is 60 degree and other two angles are in the ratio 1 :2, then the largest angle is

• 90 degree

• 80 degree

• 70 degree

• 60 degree

If two angles of a triangle are 60 degree each, then the triangle is

• Isosceles but not equilateral

• Scalene

• Equilateral

• Right-angled

Find x

• 100

• 115

• 110

• 200

Find x

• 120

• 100

• 115

• 210

What is adjacent to angle 1`

• 3

• 2

• 4

• 6