Angle AOC =BOC =90degree on a line Ab Co perpendicular to AB prove AOB is a line
This question is of class 9th
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Step-by-step explanation:
AOB is a line if
...... sum of all angles on a straight line is 180 degree
angle AOC+ANGLE BOC SHOULD BE EQUAL TO 180 DEGREE ...
90 + 90 = 180 DEGREE HENCE ..... IT IS A STRAIGHT LINE
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