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Intro to Algebra/Geometry

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Presentation on theme: "Intro to Algebra/Geometry"— Presentation transcript:

1 Intro to Algebra/Geometry
Circles Intro to Algebra/Geometry

2 CIRCLE A circle is the set of all points that are the same distance from a fixed point called the center.

3 RADIUS The distance from the center to a point on the circle is the radius of the circle. All radii of a circle are congruent.

4 DIAMETER The distance across the circle, through its center, is the diameter of the circle.

5 The diameter is twice the radius.

6 Examples The diameter of a circle is 15cm. What is the measure of the radius? The radius of a circle is 6in. What is the measure of the diameter?

7 Find the radius and diameter.

8 Find the radius and diameter.

9 Circumference The distance around a circle is its circumference.

10 Circumference

11 Find the Circumference

12 Find the Circumference

13 Area

14 Find the Area

15 Find the Area


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