2. measure of an angle
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The document discusses units for measuring angles. It explains that a circle can be divided into 360 equal parts called degrees, with each degree comprised of 100 minutes. Common angle measures are 1 degree, 2 degrees, 3 degrees, 10 degrees, 25 degrees, 90 degrees, and 180 degrees. The document also notes that setsquares cannot be used to divide a circle into five equal parts, so another method is needed to draw and measure angles of varying sizes.
2. measure of an angle
- 2. Can we make a circle into five equal parts using a setsquare?? Using corners of a set squares, we cannot make such an angle at the centre.
- 5. We need some other method to draw and measure angles of different sizes.
- 6. What is the unit of measurement of lengths? Millimetre , centimetre, metre and kilometre Do you know the unit of measurement of angles? The measure of the angle is said to be degree( )
- 7. We can make a circle into 360 equal pieces We get the measurement of each angle as 10 The measurement of the above angle is 1 degree - 10 Double of this angle is 2 degree - 20 Triple of this angle is 3 degree - 30 10 times of this angle is 10 degree - 100 25 times of this angle is 25 degree - 250 90 times of this angle is 90 degree - 900 180 times of this angle is 180 degree - 180