4.2 · Geometrical constructionsLesson 2 of 10Free preview
Measuring and drawing angles
Put the protractor centre on the vertex, start from zero on one arm, and read the right scale. Reflex angles are 360° minus the small angle.
4.2 · Geometrical constructionsLesson 2 of 10Free preview
Put the protractor centre on the vertex, start from zero on one arm, and read the right scale. Reflex angles are 360° minus the small angle.