A circle is a round shaped figure that has no corners or edges. In geometry, a circle can be defined as a closed, two-dimensional curved shape.

The center of a circle is also called the focus of the circle.

8 Circle Time Activity Ideas for Preschoolers

• Alphabet Soup. Stir in some fun into circle time with the alphabet soup game from notimeforflashcards.
• Persona Puppets.
• Fingerplay.
• Guess the Rule.
• The Handwriting Game.
• Birthday Bag of the Month.
• Remote Control.
• Sail Around the World.

A circle is the set of all points at a specific distance from a given point in two dimensions. concentric circles. Two or more circles that have the same center, but different radii. congruent circles. Two or more circles with the same radius, but different centers.

To help tliese students categorize their real-life relationships, we devised the Circles concept (see fig. 1 below): six color-coded concentric circles are repro duced upon a life-sized floor mat to clearly define various levels of intimacy as we role-play social relationships.

The Circle Formulas are expressed as, Diameter of a Circle. D = 2 × r. Circumference of a Circle. C = 2 × π × r.

A circle is a closed shape formed by tracing a point that moves in a plane such that its distance from a given point is constant. The word circle is derived from the Greek word kirkos, meaning hoop or ring. in this article, we cover the important terms related to circles, their properties, and various circle formulas.

The circle is the shape with the largest area for a given length of perimeter (see Isoperimetric inequality). The circle is a highly symmetric shape: every line through the centre forms a line of reflection symmetry, and it has rotational symmetry around the centre for every angle.

Terms in this set (24)

• Circle. A round plane figure whose boundary consists of points equidistant from the center.
• Center of Circle. The point inside a circle that is that same distance from all points in the circle.
• Radius.
• Chord.
• Diameter.
• Secant.
• Tangent.
• Point of Tangency.

three types

Names of parts of a circle

• Centre.
• Radius.
• Diameter.
• Circumference.
• Tangent.
• Secant.
• Chord.
• Arc.

A Simple Way to Divide Circles

1. Draw line AB through the center of your circle, and divide it equally into the number of parts you want.
2. Set a compass at points A and B, scribe the two arcs as shown, and label their intersection as point C.

Divide the square by drawing lines through the midsection. draw a vertical line crossing the midsection of the square. Next, draw a horizontal through the midsection. Doing this should divides the square into 8 equal triangles.

Draw a straight line through the middle and two sides of the circle using a ruler. Place the ruler so that the line passes through the circle’s center point. Extend the line all the way through the edges of the circle. Two equal segments will now appear on the circle.

3 cuts

If it was divided into 18 equal parts, simply divide 360 by 18 to find the degrees of each angle. 360/18= 20 degrees. Do the same when dividing a circle into 5 parts: 360/5= 72 degrees.

Take your ruler and draw a perpendicular line from this point to the outside diameter of the circle. This will give you two points. Connect these two points to the center point and you have the circle divided into three.