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4 marksGeometric Problem Solving (Lines, Angles, Polygons)

CSEC Mathematics · January 2013 · Paper 2 · Question 3(b)(i)a)

In the diagram, not drawn to scale, ABC is an isosceles triangle with AB = AC and angle ABC = 54°. DE is parallel to BC.

Calculate, giving a reason for your answer, the measure of ∠ BAC.

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Other parts of this question

  1. 3(a)(i)Copy and complete the Venn Diagram to represent the information about the awards given, showing the number of students in EACH subset.[4 marks]
  2. 3(a)(ii)Calculate the value of x.[2 marks]
  3. 3(b)(i)b)Calculate, giving a reason for your answer, the measure of ∠ AED.[4 marks]
  4. 3(b)(ii)Explain why triangles ABC and ADE are similar but not congruent.[2 marks]

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