Page 168 - Start Up Mathematics_5

2. Write what kind of angle is made by the hands at these times. Also write the time.

11 12 1 11 12 1 11 12 1
10 2 10 2 10 2
9 3 9 3 9 3
8 4 8 4 8 4
7 6 5 7 6 5 7 6 5

11 12 1 11 12 1
10 2 10 2
9 3 9 3
8 4 8 4
7 6 5 7 6 5

SCRATCH YOUR BRAIN

1. Count the number of triangles in the given figure. How many of these are right
angled?

2. The angle formed between any two consecutive numbers on a clock is 30°. Use this
information to find the angles made by the hands of the clock and fill the table given
below. First one has been done for you.

(a) (b)
11 12 1 11 12 1
10 2 10 2
9 3 9 3
8 4 8 4
7 6 5 60°; Acute angle 7 6 5 ___; ___________

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