Back to Measure angles in whole-number degrees using a protractor — Problem 1 · Task Set 24
Exercises: Measuring and Sketching Angles Using a Protractor
Work through each section in order. Before you trust a scale reading, always classify
the angle by eye first -- acute, right, or obtuse -- and check that your reading agrees.
Grade 4·23 problems·~30 min·Common Core Math - Grade 4·standard·4-md-c-6
Work through problems with immediate feedback
A
Fluency Practice
1.
A protractor's baseline lies along one ray of an angle. That ray sits at 0 degrees on the inner scale and 180 degrees on the outer scale. The second ray crosses the inner scale at 55 and the outer scale at 125. What is the angle's measure?