3 marksGeometric Problem Solving (Lines, Angles, Polygons)

CSEC Mathematics · May/June 2013 · Paper 2 · Question 3(b)(iii)

In the diagram below, not drawn to scale, AEC and ADB are straight lines. <ABC = <ADE = 90°. AC = 10 m, AB = 8 m and DB = 3.2 m.

Determine the length of DE.

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Other parts of this question

3(a)(i)Copy the Venn diagram below and complete it to show, in terms of x, the number of students in each region.[3 marks]
3(a)(ii)Write an expression, in terms of x, which represents the TOTAL number of students in the survey.[1 mark]
3(a)(iii)Determine the number of students in Form 5 who used ONLY cameras.[2 marks]
3(b)(i)Calculate the length of BC.[2 marks]
3(b)(ii)Explain why triangles ABC and ADE are similar.[1 mark]

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