## MCQ Questions for Class 7 Maths: Ch 6 The Triangle and its Properties

1. A triangle in which two sides are of equal lengths is called _______________.

(a) scalene(b) acute-angled

(c) equilateral

(d) isosceles

► (d) isosceles

2. ABC is an isosceles triangle with AB = AC and AD is altitude, then ____.

(a) ∠B>∠C

(b) ∠B<∠C

(c) ∠B=∠C

(d) None of these

► (c) ∠B=∠C

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

(a) obtuse-angled triangle

(b) right-angled triangle

(c) acute-angled triangle

(d) None of these

► (b) right-angled triangle

4. Î”ABC is right-angled at C. If AC = 5 cm and BC = 12 cm find the length of AB.

(a) 13 cm

(b) 11 cm

(c) 20 cm

(d) None of these

► (a) 13 cm

5. The sum of the lengths of any two sides of a triangle is _____________ the third side of the triangle.

(a) greater than

(b) half

(c) less than

(d) double

► (a) greater than

6. A/an _____________ connect a vertex of a triangle to the mid-point of the opposite side.

(a) altitude

(b) median

(c) vertex

(d) none of these

► (b) median

7. How many medians a triangle can have?

(a) 1

(b) 2

(c) 3

(d) none of these

► (c) 3

8. Which is the longest side of a right triangle?

(a) Base

(b) Perpendicular

(c) Hypotenuse

(d) None of these

► (c) Hypotenuse

9. How many altitudes can a triangle have?

(a) 1

(b) 2

(c) 3

(d) None of these

► (c) 3

10. Which is the longest side in the triangle ABC right angled at B?

(a) AB

(b) AC

(c) BC

(d) None of these

► (b) AC

11. If the angles of a triangle are in the ratio 4:5:9. Find all the angles of a the triangle

(a) 40 deg, 50 deg , 90 deg

(b) 90 deg, 72 deg, 18 deg

(c) 9 deg, 90 deg, 55 deg

(d) 45 deg, 60 deg, 18 deg

► (a) 40 deg, 50 deg , 90 deg

12. One of the angles of a triangle is 110° and the other two angles are equal what is the measure of each of these equal angles

(a) 35°,35°

(b) 40° , 40°

(c) 11°, 11°

(d) 80° , 80°

► (a) 35°,35°

13. Which is the longest side in the triangle PQR right angled at P?

(a) PQ

(b) QR

(c) PR

(d) None of these

► (b) QR

14. In a Î”ABC,which of the given condition holds?

(a) AB−BC>CA

(b) AB+BC<CA

(c) AB−BC<CA

(d) AB+CA<BC

► (c) AB−BC<CA

15. In the Pythagoras property, the triangle must be ___________ .

(a) obtuse-angled

(b) acute-angled

(c) right-angled

(d) none of these

► (c) right-angled

16. Î”PQR is a triangle right-angled at P. If PQ = 3 cm and PR = 4 cm, find QR.

(a) 8 cm

(b) 5 cm

(c) 7 cm

(d) 3 cm

► (b) 5 cm

17. In a Î”ABC,if AB+BC = 10 cm, BC+CA = 12 cm,CA+AB = 16 cm, then the perimeter of the triangle is ____.

(a) 19cm

(b) 17cm

(c) 28cm

(d) 22cm

► (a) 19cm

18. Aryan wants to plant a flower on the ground in the form of a rhombus. The diagonals of the rhombus measures 42 cm and 56 cm. Find the perimeter of the field.

(a) 150 cm

(b) 140 cm

(c) 130cm

(d) 120cm

► (b) 140 cm