# The Circle - PowerPoint PPT Presentation

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The Circle. Charlie Haffey Norwood Elementary Science. A Circle Is……. A type of line segment One end joins the other (loop) EVERY part of the line is the same distance from a single point Single point is the center. Definitions. Center. Circumference. Lines. Radius. Diameter. Tangent.

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The Circle

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## The Circle

Charlie Haffey

Norwood Elementary Science

### A Circle Is……

• A type of line segment

• One end joins the other (loop)

• EVERY part of the line is the same distance from a single point

• Single point is the center

Center

Circumference

Diameter

Tangent

### Dividing A Circle

• One diameter

• Two equal sections

• Each section is ½

• AKA one half

### Dividing A Circle

• Two diameters

• Four equal sections

• Each section is ¼

• AKA one fourth

### Dividing A Circle

• 180 diameters

• 360 equal sections

• Each section is 1/360

• AKA one three hundred sixtieth

• AKA one degree

1o

### 360 degrees (360o)

• End of diameters shown

• Degrees labeled by 10s

• Every degree marked

Circular Protractor

http://xt8dob.files.wordpress.com/2012/05/degree-wheel.png

## The Circle

Charlie Haffey

Norwood Elementary Science