

Unit 7: Geometry with Circles Day 1
Presentation
•
Mathematics
•
6th - 8th Grade
•
Practice Problem
•
Easy
Standards-aligned
Courtney Tout
Used 25+ times
FREE Resource
4 Slides • 9 Questions
1
Unit 7: Geometry with Circles Day 1

2
Parts of a Circle
Center: The center post point of a circle that is equidistant from any point on the edge.
Radius: A line that goes from the center of the circle to the edge of the circle
Diameter: A line that goes through the center from one edge of the circle to another edge.
3
Parts of a Circle
Circumference: The perimeter around the circle
4
Multiple Choice
Determine which part of the circle the image is depicting.
Radius
Diameter
Circumference
Center
5
Multiple Choice
Determine which part of the circle the image is depicting.
Radius
Diameter
Circumference
Center
6
Multiple Choice
Determine which part of the circle the image is depicting.
Radius
Diameter
Circumference
Center
7
Multiple Choice
Determine which part of the circle the image is depicting.
Radius
Diameter
Circumference
Center
8
Relationship between Radius and Diameter
The radius is from the center to the edge of a circle.
The diameter is from one end of the circle to the other, passing through the radius.
Radius is 1/2 the size of diameter
Diameter is 2 times the size of the radius
9
Multiple Choice
The diameter is shown. Determine the radius.
Diameter = 11 mm
Radius = 5 mm
Diameter = 11 mm
Radius = 5.5 mm
Diameter = 11 mm
Radius = 22 mm
10
Multiple Choice
Determine the Radius and Diameter.
Radius = 7 cm
Diameter = 14 cm
Radius = 7 cm
Diameter = 3.5 cm
Radius = 3.5 cm
Diameter = 14 cm
Radius = 3.5 cm
Diameter = 7 cm
11
Multiple Choice
What is the relationship between diameter and radius?
The radius is always 2 times the diameter.
The radius is always 1/2 the diameter.
The diameter is always 1/2 the radius.
There is no relationship between the two.
12
Multiple Choice
Determine Radius.
Radius = 63 ft
Radius = 126 ft
Radius = 31.5 ft
Radius = 21 ft
13
Poll
How do you feel about the lesson?
1. I don't understand it.
2. I understand a little, but I need more help.
3. I understand it.
4. I understand it and I can teach it to someone else!
Unit 7: Geometry with Circles Day 1

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