1. Ans
(i)
at
(i) 8
(i) 2
(a) The measures of obtuse angled triangle are
108°, 41° 31°
(ii) 60°, 60°, 60°
(iii) 40°, 90°, 50°
(b) if the stop clock starts at 4 ºclock and after making half revolution it will stop
(ii) 9
(iii) 10
(c) The number of right angles turned by the hour hand of a clock when it goes
from 5 to 8
(ii) 1
(iii) 3
(d) Instrument used to measure angle
(ii) Protractor
(iii) Compass
(e) Angle where measure is greater than 90° cannot be
(1) Straight angle
(ii) reflex angle
(iii) acute angle
( The fraction of a clockwise revolution the hour hand of a clock turns through
when it goes from 10 to 1 is
1
(i)
(ii)
(iii)
4
4
following statements
3
(i) Ruler
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