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Interactive angles - Middle/High

Interactive angles - Middle/High
This activity allows manipulation and investigation of various types of angles. It can be used at a variety of different grade levels. At its most basic for teaching about types of angles, acute, obtuse or reflex. For more advanced use to create angle problems in which the missing letter angle values have to be found. You can click and drag the handles to change the angles and the values will updated. A built in protractor can be used to practice measuring angles. The controls The mode control is used to it selects the type of angle problem. In all the modes individual angles can be shown or hidden for example click the angle (a). The handles at the end of each line can be clicked and dragged to change the angle. Mode 'one' Identifying angle types. The initial mode is unique in that there is only one angle. Complementary Angles mode Supplementary Angles mode Supplementary angles are angles that add up to 180°. Angles at a point mode The angles at a point add up to 360°. Angles Glossary

http://www.visnos.com/demos/basic-angles

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