Right Angled Triangle

Q.

How many triangles are there in below figure?

1. 6

2. 4

3. 12

4. 8

Q.

The triangle whose lengths of sides are 4 cm, 5 cm and 6 cm is a right-angled triangle.

1. True

2. False

Q.

The side opposite to the right angle in a triangle is called the _________.

1. perpendicular

2. base

3. diagonal

4. hypotenuse

Q. What is the type of triangle shown below?

1. Right angled scalene triangle
2. Acute angled isosceles triangle
3. Obtuse angled scalene triangle
4. Acute angled scalene triangle

Q.

The triangle of sides 9 cm, 40 cm, and 41 cm is a right-angled triangle?

1. True

2. False

Q.

If the length of one of the diagonals of a rhombus of side 20 cm is 24 cm, then the length of the other diagonal is :

1. 16 cm

2. 32 cm

3. 24 cm

4. 12 cm

Q. Pythagoras theorem can be applied to

1. right-angled triangle
2. equilateral triangle
3. obtuse angled triangle
4. All of the above.

Q.

Can a triangle with sides 7cm, 24cm and 25 cm form a right angled triangle?

1. False

2. True

Q.

Name the type of triangle

$△ABC$with $\angle A=40°$ , $\angle B=80°$ and $\angle C=60°$

Q. The Pythagoras theorem is applicable only for ____ angled triangles.

1. acute
2. obtuse
3. right
4. zero

Q. The Pythagoras theorem is applicable only for ____ angled triangles.

1. acute
2. obtuse
3. right
4. zero

Q. Which of the following is/are right angled triangle(s)?

1. 
2. 
3. 
4. 

Q.

Can the lengths 18 cm, 24 cm, and 30 cm be the sides of a right-angled triangle?

1. Yes

2. No

Q. $\Delta ABC$ is right angled at A. AB = 60 units, AC = 80 units and BC = 100 units. D is a point between B and C such that $\Delta ADB$ and $\Delta ADC$ have equal perimeters. What is the length of BD?

1. 60

Q. Which of the following is not a classification of a triangle based on the length of its side?

1. Isosceles triangle
2. Right angled triangle
3. Scalene triangle
4. Equilateral triangle

Q.

In the given figure, if $\angle CAD={150}^{\circ }$ and $\angle ABC={60}^{\circ },$ then reflex $\angle ACB=$___ .

Q. Which of the following can be classified as right angled triangles?

1. $\angle 1={45}^{\circ }$; $\angle 2={45}^{\circ }$; $\angle 3={90}^{\circ }$
2. $\angle 1={25}^{\circ }$; $\angle 2={45}^{\circ }$; $\angle 3={110}^{\circ }$
3. $\angle 1={50}^{\circ }$; $\angle 2={45}^{\circ }$; $\angle 3={90}^{\circ }$
4. $\angle 1={50}^{\circ }$; $\angle 2={90}^{\circ }$; $\angle 3={40}^{\circ }$

Q. Angle between perpendicular lines is ${180}^{\circ }$.

1. True
2. False

Q. The Pythagoras theorem is applicable only for ____ angled triangles.

1. obtuse
2. right
3. zero
4. acute

Q. Which of the following is not a classification of a triangle based on the length of its side?

1. Right angled triangle
2. Scalene triangle
3. Equilateral triangle
4. Isosceles triangle