Triangles, Quadrilaterals

Triangles, Quadrilaterals

TGM Original Questions

In the figure below, \(ABCD\) is a rhombus. Produce \(CB\) to \(E\) such that \(BD = BE\). Given that angle \(BCD = 60°\), find the sizes of

  1. angle \(ADB\),
  2. angle \(ABC\),
  3. angle \(BED\),
  4. angle \(BFE\).
  5. Determine the type of triangles \(ABD\) and \(BCD\).
  6. Construct the line \(AE\). Determine the type of quadrilateral \(AEBD\), stating your reasons clearly.

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Answer:(a) \(60^\circ\) (b) \(120^\circ\) (c) \(30^\circ\) (d) \(90^\circ\) (e) Triangles \(ABD\) and \(BCD\) are equilateral (f) \(AEBD\) is a rhombus

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