Circles Flashcards
1
Q
the perimeter of the circle is called the…
A
circumference
2
Q
the inside of the circle is called the…
A
area
3
Q
the line segment that goes from edge to edge of the circle and passes through the center is called the…
A
diameter
4
Q
the line segment that starts at the center and goes to the edge is called the…
A
radius
5
Q
true or false:
the diameter is twice the length of the radius
A
true
6
Q
true or false:
the radius is twice the length of the diameter
A
false
7
Q
the equation that relates diameter to radius is
A
d= 2r
8
Q
the equation for circumference is…
A
C=2πr
9
Q
The equation for area is…
A
A = πr2
