Question

Find by construction the centre of a circle with the help of 60-30 set square.

Answer 1

Answer:

The key point is NOT the 30–60, it is that the other angle is a right angle.

If you draw a diameter in a circle and then draw two lines from the points where it meets the circumference to another point on the circumference then the angle produced is 90 degrees.

So you do it in reverse. You put the 90 degree corner of the set square on the circumference of the circle and draw a line using the hypotenuse as a ruler. (It does not matter where the line is drawn.) This creates a diameter. You then do it a second time, moving the setsquare (you can just rotate it), and produce another diameter.

Where the diameters cross is the centre.

Step-by-step explanation:

Hope it helps :)