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Class 7 - Properties Of Triangle Worksheet - 1

1. A triangle can have four vertices. Mark True / False.

a) True                      b) False

2. A triangle whose one angle is more than 90° is known as obtuse triangle. Mark True / False.

a) True                      b) False

3. All three sides of a triangle are unequal; it is known as equilateral triangle. Mark True / False.

a) True                      b) False

4. If all the three angles of a triangle are equal to 90°, then it is known as right-angled triangle. Mark True / False.

a) True                      b) False

5. All three sides of an equilateral triangle is equal. Mark True / False.

a) True                      b) False

6. Sum of all the angles of a triangle is equal to _____.

a) 90°                      b) 180°
c) 270°                    d) 360°

7. If one angle of a triangle is more than 90°, then it is known as _____ triangle.

a) Acute                      b) Right-angled
c) Obtuse                    d) Scalene

8. In an equilateral triangle measure of each angle is equal to _____.

a) 180°                      b) 90°
c) 270°                      d) 60°

9. A triangle has at least _____ acute angles.

a) 1                      b) 2
c) 3                      d) None of these

10. A triangle can not have more than _____ obtuse angles.

a) 1                      b) 2
c) 3                      d) None of these

11. The sum of all the three angles of a triangle is equal to _____ right angles.

a) 1                      b) 2
c) 3                      d) None of these

12. The number of medians in a triangle is equal to _____.

a) 1                      b) 2
c) 3                      d) None of these

13. A triangle formed by the sides of lengths 5 cm, 7 cm, and 5 cm is known as _____.

a) Right-angled triangle
b) Isosceles triangle
c) Equilateral triangle
d) Scalene triangle

14. A right-angled triangle can have two _____ angles.

a) Right                      b) Obtuse
c) acute                      d) None of these

15. A triangle whose angles measures are 25°, 65° and 90°, then it is known as _____.

a) Right-angled triangle
b) Isosceles triangle
c) Equilateral triangle
d) Scalene triangle

16. Which of the below mentioned angles can form a triangle?

a) 27°, 65°, 93°                      b) 25°, 75°, 90°
c) 25°, 65°, 80°                      d) 45°, 65°, 70°

17. In a triangle ABC, if ∠A = 45°, ∠B = 45° then ∠C is equal to _____.

a) 90°                      b) 45°
c) 65°                      d) 99°

18. If an isosceles triangle's both base angles are 35°, then the triangle is known as _____.

a) Right-angled triangle
b) Isosceles right-angled triangle
c) Equilateral triangle
d) Obtuse triangle

19. In a right-angled triangle the length of two sides are 3 cm and 4 cm. Find the length of hypotenuse.

a) 4 cm                    b) 5 cm
c) 6 cm                    d) 7 cm

20. If one angle of a triangle is equal to the sum of the other two angles which are equal, then the measure of these two angles is equal to _____.

a) 65°                      b) 45°
c) 90°                      d) 99°

If you want to download the above worksheet, please click below link.

Properties of Triangle Worksheet-1Download the pdf

Properties of Triangle Worksheet - 1

Properties of Triangle Worksheet - 2

Properties of Triangle Worksheet - 3

Answer Sheet

Properties-Of-Triangle-AnswerDownload the pdf











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