90 degree angle

let us learn about 90 degree angle

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90 Degree angle is said to be the angle between two straight lines which are perpendicular to each other. The sum of two angles which is equal to 90 degree, then the angles are called complementary angle. The 90 degree angle is denoted as the symbol ‘’ ∟’’. Thus the angle between two straight horizontal line and vertical line is 90 degree. In this article, we study about how to draw 90 degree angle.

Study Procedure for 90 degree angle:
Step 1: Make a reference line as AB with X unit length.
Step 2: Place the compass tip at point A and draw arc on both upper and lower side by taking half of the length of AB.
Step 3: Similarly draw arc on both upper and lower side at the center of the point ‘’B’’, with same width of the compass.
Step 4: The intersecting point of above and below of the line AB is ‘’C’’ and ‘’D’’.
Step 5: Join the intersecting point ‘’C’’ and “D”.
Step 6: Now we see the line CD and AB is perpendicular each other, we get 90 degree angle.
Step 7: The angle COB = 90 degree and the angle COA = 90 degree.
Step 8: To joining the point C and the point B, we get hypotenuse and OB is called as adjacent and OC is opposite.