The angle measurement on the inner ring where the Ring, which is the same as 180° on the outside ring. Practice 3 - One ray is already lined up with 0° on the inside.Measure Practice 2 - An obtuse angles measure more than 90°, but less than.Classify Practice 1 - A right angles measure exactly 90°.Homework 3 - Acute angles measure less than 90°, but moreĮach sheet has a different purpose.Homework 2 - Since we need to start counting from zero (where the line isĮven) we use the top scale to determine the measure of the angle.Use of a protractor that has the shape of a semi-circle and two scales marked from 0° to 180° in both directions. Homework 1 - A protractor is used to measure angles. It really helps to do a few of these as a class.
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