summary on angles

summary on angles

1. naming & classifying angles

   • an angle describes the size of the rotation or turn. it has two arms that meet at a point.

2. measuring and drawing angles

   • when measuring the size of an angle you must use a protractor and a ruler. when measuring angle you must have the point in the of the protractor.

3. Complementary and supplementary angles

   • complementary angles add up to 90 degrees. e.g 45+45=90. supplementary angles add up to 180 degrees. e.g 90+90=180, 50+130+180.