Everything Geometry
The Basics| Classifying Quadrilaterals | Classifying Triangles
Area & Perimeter | Angles | Circles
Types of Angles
More Geometry
Triangles Quadrilaterals Area & Perimeter
Types of Angles Definition Review Quick Quiz
Students should be able to: identify and describe the relative size of acute, obtuse and straight angles with respect to right angles.
Students should be able to:
Acute Angles
An acute angle is one that rotates less than 90º.
Click the button below the angle to make the ray rotate to show the how big an acute angle can be.
Use this mini-movie on your SMARTBoard
An acute angle has a measure less than 90º.
Quick Quiz
Which angle below is an acute angle? (click the button under the correct answer)
More angles:
Angles Home Right Angles Acute Angles Obtuse Angles
Everything Geometry The Basics| Classifying Quadrilaterals | Classifying Triangles Area & Perimeter | Angles | Circles
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