Back to Measure angles in whole-number degrees using a protractor — Problem 6 · 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

Fluency Practice

You are sketching a 140-degree angle. Before marking the dot, should it fall before or after the 90-degree mark on the scale?

After the 90-degree mark, since 140 degrees is obtuse (greater than 90 degrees).

Before the 90-degree mark, since 140 degrees is a small angle.

Exactly at the 90-degree mark.

It does not matter where the dot falls.