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The Circle

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The Circle

Charlie Haffey

Norwood Elementary Science

- 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

Radius

Diameter

Tangent

- One diameter
- Two equal sections
- Each section is ½
- AKA one half

- Two diameters
- Four equal sections
- Each section is ¼
- AKA one fourth

- 180 diameters
- 360 equal sections
- Each section is 1/360
- AKA one three hundred sixtieth
- AKA one degree

1o

- 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