Draw a circle of radius 3.5 cm and then draw a tangent to this circle making angle of 45 degree with a line passing through the centre.

Length of the radius = 3.5 cm

The steps below need to be followed to construct the circle and the tangents. 

1. Draw a circle of radius 3.5 cm with centre O.

2. Draw two perpendicular chords PQ and MN passing through O.

3. Draw perpendiculars X1Y1 at P, X2Y2 at Q, X3Y3 at M and X4Y4 at N respectively such that.

Thus, X1Y1, X2Y2, X3Y3 and X4Y4 are four tangents at the ends of the two perpendicular diameters PQ and MN.

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