MeasuringAngles Press Ctrl-A ©2009 G Dear – Not to be sold/Free to use Stage 4 Years 7 & 8 Web.

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We measure angles with a protractor.

©G Dear 2010 – Not to be sold/Free to use

G Dear ©2010 – Not to be sold/Free to use

©G Dear2010 – Not to be sold/Free to use

©2009 G Dear – Not to be sold/Free to use

©2009 G Dear – Not to be sold/Free to use

©2009 G Dear – Not to be sold/Free to use

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©2009 G Dear – Not to be sold/Free to use

G Dear ©2009 – Not to be sold/Free to use

©2009 G Dear – Not to be sold/Free to use

G Dear ©2009 – Not to be sold/Free to use

Presentation transcript:

MeasuringAngles Press Ctrl-A ©2009 G Dear – Not to be sold/Free to use Stage 4 Years 7 & 8 Web

Measuring Angles Base Line Central Point The Basics End of Slide

Measuring Angles 1. Draw an angle

Measuring Angles 2. Put the central point of the protractor on the vertex. Vertex

Measuring Angles 3. Rotate protractor so the base line lines up with a ray.

Measuring Angles 4. Read the angle off the protractor reading from 0 o. 52 o End of Slide

Measuring Angles 1. Draw an angle

Measuring Angles Vertex 2. Put the central point of the protractor on the vertex.

Measuring Angles 3. Rotate protractor so the base line lines up with a ray.

120 o Measuring Angles 120 o 4. Read the angle off the protractor reading from 0 o. End of Show Web