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Starter Questions

Starter Questions. Scale Drawings & Bearings. Learning Intention. To solve real-life problems using scale drawings. T. X. Y. 55 o. Scale Drawings & Bearings. Problem. The sketch shows a flag-pole YT supported by a wire. The distance from X to Y is 6m and angle TXY = 55 o.

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Starter Questions

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  1. Starter Questions

  2. Scale Drawings & Bearings Learning Intention • To solve real-life problems using scale drawings.

  3. T X Y 55o Scale Drawings & Bearings Problem The sketch shows a flag-pole YT supported by a wire. The distance from X to Y is 6m and angle TXY = 55o. Make a scale drawing and work Out the real height of the pole. Use a scale of 1cm = 2m 6m

  4. T X Y 55o 6m Scale Drawings & Bearings Solution Using a scale of 1cm = 2m T Step 1: Draw line XY=3cm Step 2: Draw a line straight up from Y. Step 3: Measure angle 55o from X. Step 4: Draw line from X to vertical line and mark T at crossover point. 4.3cm Step 5: Measure length YT. Step 6: Multiply length YT. by scale factor. 4.3 x 2 = 8.6m X Y Flag pole is 8.6m high

  5. Harder Scale Drawings Now try Exercise 3 Ch17 (page 199)

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