How to draw tangent to a circle without using centre
Asked by admin @ in Math viewed by 355 People
How to draw tangents to a circle without using the center?
Answered by admin @
E.g. Draw a circle of radius 4 cm and constructa tangent to it from an external point without using centre.
Steps of construction:
1) Take point O and draw a circle of radius 4 cm.
2) Take any point P out side the circle.
3) Through the external point P draw a straight line PBA meet the given circle at A and B.
4) With AP as diameter , draw a semicircle.
5) Draw BC ⊥ AP, which intersects the semicircle at C.
6) With P as centre and radius PC draw an arc cutting the given circle at Q .Join PQ Then PQ is the required tangent.
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