Eric Nicholas K's answer to Skyler's Secondary 3 E Maths Singapore question.
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Each triangle is isosceles and the side of different length from the other two lengths in a triangle is horizontal.
Of course, each of the isosceles triangles is symmetrical to a vertical line, so it follows that the x-difference of P and Q must be the same as the x-difference of Q and S, if you have correctly identified a vertical line passing through Q as the symmetry line of triangle PQS.
A similar argument applies for the other triangle.
Of course, each of the isosceles triangles is symmetrical to a vertical line, so it follows that the x-difference of P and Q must be the same as the x-difference of Q and S, if you have correctly identified a vertical line passing through Q as the symmetry line of triangle PQS.
A similar argument applies for the other triangle.
Date Posted:
5 years ago
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