Sheeeeesh's answer to Sheeeeesh's Secondary 4 A Maths Singapore question.
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3 years ago
For (ii), recall one of the properties of circle ... "angle in a semi-circle is 90degree", From (i) we know angle TSR is 90deg,
If a circle is drawn with S, T and R on the circumference, then TR must be the diameter of that circle and the midpoint of TR is the centre of the circle
If a circle is drawn with S, T and R on the circumference, then TR must be the diameter of that circle and the midpoint of TR is the centre of the circle
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