Math topic中文

Measuring and drawing angles

Measuring angles with a protractor, and drawing angles with a protractor or set square.

Practice questions

  1. 1A triangle ABC is drawn on a square grid. Measure and write down the size of ∠ABC\angle ABC. Using the line WX, draw a par…
  2. 2The diagram shows triangle ABC with vertices labelled A (left), B (top) and C (right). Segments AB, BC and AC are drawn.…
  3. 3Measure and write down the size of angle aa. Ans: ___ exto^ ext{o}
  4. 4Measure and write down the length of BC Ans: (a) ___ cm the size of ∠ACB\angle ACB Ans: (b) ___ ∘^\circ
  5. 5要画一个直角，最好的办法是用()(\quad)画。 A. 尺 B. 折纸 C. 三角板
  6. 6用一副三角尺画角,不能画出的角是 ( ) A. 15° B. 75° C. 145° D. 165°
  7. 7用一副三角尺不能画出的角是()(\quad) A. 15°15° B. 110°110° C. 135°135° D. 150°150°