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

Definitions

Circumference

Radius

Lines

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

Here is an angle of 1 degree (1o)

1o

360 degrees (360o)

End of diameters

shown

Degrees labeled by

10s

Every degree

marked

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

Circular Protractor

The Circle

Charlie Haffey

Norwood Elementary Science