2. y + x = r 222 next

3. Properties of a Circle What is Pi? Definition of a Circle Lesson Standard Click one!

4. Definition of a Circle derived from the Latin word circulus a line that curves around until it’s ends join together 360 degrees / perfectly symmetric all points on the line must be the same distance from the center point.

5. Properties of a Circle (click one) Circumference Center Center Center Diameter Diameter Radius

6. What is Pi? diameter Pi Circumference Remains the same whether a circle is translated, dilated, reflected, or rotated Remains the same whether a circle is translated, dilated, reflected, or rotated diameter Pi Circumference Remains the same whether a circle is translated, dilated, reflected, or rotated Remains the same whether a circle is translated, dilated, reflected, or rotated

7. What is the Center of a Circle? Located inside the circle all the points on the line are equal distances from the center Which point is the center point? Click a point!

8. Answer Sorry, please try again.

9. Answer Great job! You found the center point!

10. What is the Diameter of a Circle? distance across a circle dividing the circle so that both sides are symmetric crosses over the center point

11. What is the radius of a circle? half the diameter distance from any point on the circle to the center point r equals the diameter 2

12. What is the circumference of a circle? the distance around the circle only changes if dilated the perimeter of the circle

13. Standard *Mathematics Georgia Performance Standards Grade 7* M7G2. Students will demonstrate understanding of transformations. They should learn to demonstrate understanding of translations, dilations, rotations, reflections, and relate to appropriate transformations; given a figure in the coordinate plane, determine the coordinates resulting from a translation, dilation, rotation, or reflection. M7G3. Students will use the properties of similarity and apply these concepts to geometric figures. Students should understand the meaning of similarity, visually compare geometric figures for similarity, and describe similarities by listing corresponding parts; understand the relationships among scale factors, length ratios, and area ratios between similar figures; use scale factors, length ratios, and area ratios to determine side lengths and areas of similar geometric figures; and understand congruence of geometric figures as a special case of similarity: The figures have the same size and shape. Secondary Education Information retrieved from www.georgiastandards. org