Construction: Two Possible Triangles and a Point Defined by Loci

Construction: Two Possible Triangles and a Point Defined by Loci

Secondary 1

In the triangle \(ABC\), \(AB=10\) cm, \(BC=8\) cm and \(\angle BAC=50{}^\circ \).

  1. Complete two possible triangles \(ABC\) that are of different sizes.
  2. Construct
    1. the perpendicular bisector of \(AB\),
    2. the angle bisector of \(\angle BAC\).
  3. Mark, with an \(X\), the point that is equidistant from the points \(A\) and \(B\), and equidistant from the line \(AC\) and \(AB\).
  4. Hence, measure the length of \(BX\).

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Answer:(d) \(BX\approx5.5\text{ cm}\), subject to construction tolerance.

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