OpenRevise

Flashcards · Maths · Vectors, Constructions and Loci

Bearings, Scale Drawings, Plans and Elevations

16 cards

  1. What is a bearing?

    A direction given as an angle clockwise from north.

  2. How many figures does a bearing have?

    Three, such as 045.

  3. What is the bearing of east?

    090.

  4. What is the bearing of south?

    180.

  5. What is the bearing of west?

    270.

  6. Where do you measure a bearing from?

    The north line at the starting point.

  7. In which direction do you measure a bearing?

    Clockwise.

  8. How do you find a back bearing when the bearing is less than 180?

    Add 180.

  9. How do you find a back bearing when the bearing is more than 180?

    Subtract 180.

  10. Why are the north lines parallel?

    They all point in the same direction, north.

  11. What does a scale of 1 : 50 000 mean?

    1 cm on the map is 50 000 cm on the ground.

  12. How do you find a real length from a scale drawing?

    Multiply the drawing length by the scale.

  13. What is a plan?

    The view of a solid from above.

  14. What is an elevation?

    The view of a solid from the front or the side.

  15. How are hidden edges shown?

    As dashed lines.

  16. What should you draw at the start of a bearing problem?

    The north line at the start point.