value of a straight angle is to :
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180 degrees :A straight angle is also called ‘flat angle’.
Step-by-step explanation:
The formation of straight angles is ::
::
a). Draw a straight-line OA, with an arrowhead at A.
b). Now keep the protractor on this line such that the baseline of the protractor is aligned over OA. The A should be pointing towards the 0°of the protractor.
c).Start from 0° and move towards 180° marking of the protractor. On arriving at 180°, mark a point B on the paper.
d).Join the vertex of the line OA with the point B. the second ray OB will have the arrowhead at B.
::
There are various ways to represent straight angles as per the measurement system.
a). It is written as 180°
b). It is also written as π .
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