9. Shapes and angles

9.01 Points, lines and rays

9.02 Angles within a circle

9.03 Angles and angle types

EXPLORE: Draw angles

9.04 Right angles

9.05 Estimate angles

9.06 Measure and compare angles

9.07 Angles on a straight line

9.08 Angles at a point

9.09 Classify 2D figures

United States of America FL

Grade 4

9.05 Estimate angles

Interactive practice questions

Which angle is $less than$ $45$45 degrees?

A

B

C

Easy

< 1min

Which angle is $equal to$ $90$90 degrees?

Easy

< 1min

Which angle is $greater than$ $90$90 degrees?

Easy

< 1min

Which angle is $equal to$ $180$180 degrees?

Easy

< 1min

Outcomes

MA.4.GR.1.2

Estimate angle measures. Using a protractor, measure angles in whole-number degrees and draw angles of specified measure in whole-number degrees. Demonstrate that angle measure is additive.

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