Draw two acute angles and one obtuse angle without using a
protractor. Estimate the measures of the angles. Measure them with
the help of a protractor and see how much accurate is your estimate
Is it possible for the same
(a) line segment to have two different lengths?
(b) angle to have two different measures?
Which one of the following gases constitutes the major portion of the
atmosphere?
(a) Oxygen
(c) Argon
(b) Nitrogen
(d) Carbon dioxide
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