If one angle of a triangle is equal to the sum of the
other two angles, the triangle is
(a) obtuse (b) acute
(c) right (d) equilateral
Discuss the significance and growth of the service sector in modern
economic development.
The length of two sides of a
triangle are 7 cm and 9 cm. The
length of the third side may lie
between
(a) 1 cm and 10 cm
(b) 2 cm and 8 cm
(c) 3 cm and 16 cm
(d) 1 cm and 16 cm
Which of the following statements is not correct?
(a) The sum of any two sides of a triangle is greater than the third side
(b) A triangle can have all its angles acute
(c) A right-angled triangle cannot be equilateral
(d) Difference of any two sides of a triangle is greater than the third side
The perimeter of the rectangle whose length is 60 cm and a diagonal is 61 cm is
(a) 120 cm (b) 122 cm (c) 71 cm (d) 142 cm
If two angles of a triangle are 60° each, then the triangle is
(a) Isosceles but not equilateral (b) Scalene
(c) Equilateral (d) Right-angled
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