​Essential question

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How can we use a protractor to measure angles?

Some text here about the topic of discussion

Protractor WARNING!

Protractors have two sets of numbers going in opposite directions. One is closer to the inside and the other is towards the outside.

Be careful which you use!

Which numbers (inside or outside) should we be using to determine the angle?

The angle is ACUTE so we know it is less than 90º so we use the inside numbers highlighted yellow.

Which numbers (inside or outside) should we be using to determine the angle?

The angle is OBTUSE so we know it is greater than 90º so we use the inside numbers highlighted yellow.

Take a good look at this angle. Figure out the measurement.