Triangles and its Properties

If two sides of a triangle are equal, the triangle is called ?

• isosceles

• equilateral

• scalene

• right-angled

If all the three sides of a triangle are equal, the triangle is called ?

(a)  

How many medians can a triangle have?

• 1

• 2

• 3

• Infinite

Which is the longest side of the triangle ABC right-angled at A ?

• AC

• BC

• AB

• None of these

Which of the following can be the sides of a triangle ?

• 6cm,3cm,2cm

• 5.5cm,2.5cm, 2.5cm

• 3cm,6cm,7cm

• 2cm,8cm,3cm

In the following figure, the measure of ∠A is

• 70°

• 90°

• 80°

• 100°

Answer explanation

∠A – 180° – (60° + 40°) = 80°

The value of X in the given figure is

I am enjoying this quiz on triangles and its properties.

• Strongly Disagree

• Disagree

• Neutral

• Agree

• Strongly Agree

In the following figure, m || QR. Then, the measure of ∠QPR is

• 80°

• 85°

• 75°

• 70°

Answer explanation

∠ PQR = 50°∴ ∠ QPR – 180° – (50° + 45°) = 85°.

He was a teacher and a philosopher. He founded that for a Right angle triangle the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Who was he ?

• Ramanujan

• Aryabhata

• Brahmagupta

• Pythagoras