Angel and its Measurement#!#Part2

Bisect a right angle, using ruler and compasses. Measure each part. Bisect each of these parts. What will be the measure of each of these parts?

STATEMENT 1 When the unit for measurement of a quantity is changed, its numerical value changes STATEMENT 2 Smaller the unit of measurement matter is its numerical value

Draw an angle of 60^(@) using ruler and compasses and divide it into four equal parts. Measure each part.

Bisect a straight angle, using ruler and compasses. Measure each part.

What is the measure of the angle which is one fifth of its supplementary part

Draw a line segment of length 6cm. Construct its perpendicular bisector. Measure the two parts of theline segment.

The density of a cube is measured by measuring its mass and the length of its sides. If the maximum errors in the measurement of mass and length are 3% and 2% , respectively, then find the maximum error in the measurement of the density of cube.