Churchill's answer to Clarine Peh's Primary 6 Maths Geometry Singapore question.
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Form the possible eqns of the total angle in a triangle then add all the eqns tghtr
Also using (n-2)x180 to find the total interior angle of the centre area
Also using (n-2)x180 to find the total interior angle of the centre area
Date Posted:
5 years ago
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