Please enable JavaScript.
Coggle requires JavaScript to display documents.
Investigate: How do we measure the outside and inside of a circle? (Parts…
Investigate: How do we measure the outside and inside of a circle?
KWL
Want to know
What's the diameter
What's the radius
How to measure the inside and outside of a circle?
whats the circumference
What do you use to measure a curcle?
Learnt
A line segment that goes from one point to another on the circle's circumference is called a Chord
The line that cuts the middle of the circle is called a secant
If the chord passes through the center it is called a Diameter.
And a part of the circumference is called an Arc.
PI is-3.14159265359
Know
But we do know is that the investigation involves a circle.
We don't know anything about measuring the outside and inside of a circle.
Videos
https://www.khanacademy.org/math/geometry/hs-geo-analytic-geometry/hs-geo-dist-problems/v/point-relative-to-circle
https://www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-circumference-circle/v/circles-radius-diameter-and-circumference
https://www.wikihow.com/Calculate-the-Area-of-a-Circle
Parts of a circle
Important Circle Parts
Radius: The distance from the center of the circle to its outer rim.
Chord: A line segment whose endpoints are on a circle.
Diameter: A chord that passes through the middle of the circle. The length of a diameter is two times the length of a radius.
Secant: A line that intersects a circle in two points.
Tangent: A line that intersects a circle in exactly one point.
Point of Tangency: The point where a tangent line touches the circle.
