Grade Level: 3rd Skill: Shapes and Geometry Topic: Angles Goal: Identify right angles in geometric figures or in appropriate objects and determine whether other angles are greater or less than a right angle. Skill Description: Measurement and Geometry: right angles The ability to identify right angles (90 degree angles) and say whether other angles are greater or lesser than a right angle. The ability to tell the difference between a right angle and a bigger angle (obtuse) and smaller angle (acute). The child will be able to find and compare different types of angles in everyday life.

### Sample Problems

 (1) What is a right angle? 90 degree angle (2) How are other angles different from right angles? Some are greater or lesser than 90 degrees. (3) Do other angles have names? Yes, angles less than 90 degrees are called acute angles and angles greater than 90 degrees are called obtuse angles. (4) How do these angles show up in real-life settings? Angles are seen everywhere when two line segments come together. (5) How are angles measured? There are standardized tools to measure angles precisely.

### Online Resources

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### Extra Help Problems

 (1) 1-25 Complete the exercises on the attached activity pages.