Page 1 - ws1

SAI International School

CLASS – VII
Mathematics
Chapter- 7: Triangle and its properties

Worksheet- 1

Question Questions Marks
No.
1) The lengths of two sides of a triangle are 11 cm and 18 cm. Between what 1
two measures should the length of the third side fall?

a. Median b. 6 and 20 c. 7 and 19 d. 7 and 29
2) In a triangle, one angle is of 90°. Then 1
(i) The other two angles are of 45° each
(ii) In remaining two angles, one angle is 90° and other is 45°
(iii) Remaining two angles are complementary
In the given option(s) which is true?
(a) (i) only
(b) (ii) only
(c) (iii) only
(d) (i) and (ii)

3) The sum of the lengths of any two sides of a triangle is ——— than the third 1
side.

a. greater than b. less than

c. equal to d. greater than equal to
4) The perpendicular line segment from a vertex of a triangle to its opposite 1
side is called an ____________of the triangle.

5) Which is the longest side in the triangle PQR, right-angled at P? 1

0
6) One of the angles of a triangle is 30 . If the other two angles are of equal 2
measure, then find the measure of the other angles.

7) Find the value of the unknown interior angle x in the following figure. 2

8) The three angles of a triangle are in the ratio 1:2:1. Find all the angles of the 3
triangle.