Using a ruler and a pair of compasses only, construct:
A circle which passes through the points A, B and C and mark its centre as O.
Solution:
The eccentricity is 0 and the two foci are coincident in a circle, which is a special type of ellipse. A circle is also known as the locus of points that are evenly spaced apart from the centre.
Steps to construct:
Step 1: Draw a line segment AB = 4cm.
Step 2: At point B, draw a ray BX making an angle of 90o and cut off BC = 6cm.
Step 3: Join AC.
Step 4: Draw the perpendicular bisectors of sides AB and AC intersecting each other at point O.
Step 5: With center as O, and radius equal to OB or OA or OC, draw a circle which passes through points A, B, C.
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