Page 290 - ICSE Math 7

31. The incircle of a triangle touches all the three sides of the triangle.
32. If two angles of a triangle are unequal, then the sides opposite to them are equal.

33. Two angles and two sides of an isosceles triangle are equal.
34. All equilateral triangles are congruent.
35. Every triangle has 3 lines of symmetry.

36. The shape and size of a figure does not change after rotation.
37. A triangular pyramid has 6 edges.
38. The net of a solid shape is unique.
39. A unique triangle can be constructed with measures corresponding to SAS construction
criterion.
40. A unique triangle can be constructed with measures corresponding to AAS construction.

41. A circular ring is a plane figure bounded by the circumference of two concentric circles of
different radii.

42. Area of a parallelogram can also be obtained by the product of its two adjacent sides.
43. The number of times a particular observation occurs in a given data is called its frequency.
44. Average of quantities is also known as mean or arithmetic mean.

45. A fair coin has equal chances of sharing up a head or a tail.
1
46. The probability of getting a multiple of 5 when a die is thrown once is .
3
FILL IN THE BLANKS

1. If we multiply even number of negative integers, then the resulting integer is __________.
2. The sum of an integer and its additive inverse is __________.

3. The __________ of a given fraction can be obtain by interchanging the numerator and denominator
of the fraction.
4. If a mixed fraction is converted into an improper fraction, then its reciprocal is __________
fraction.
5. The product of 0.45 and 0.371 will have __________ decimal places.
6. 21.230 has __________ significant figures.
7. All rational numbers are either __________ or non-terminating repeating decimal number.

8. An example of a number that is rational, integer, whole but not natural is __________.
3
4
–2
9. (7z) × (7z) × (7 ) = __________.
0
–2
–2
–3
10. (2 + 2 ) (3 + 3 ) = __________.
11. The number of elements in a finite set is called the __________ of the set.
12. All the subsets of a set except the set itself are __________ subsets of the set.
13. The compound ratio of a : b and c : d is __________.
14. If p, q and r are in continued proportion, then q is known as the __________ proportional
between p and r.
15. __________ percent of 84 h is 14 h.
16. 36% of 48L = __________ L.

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