One straight cut across a paper circle.
When are the two pieces the same size?
Only when the cut goes through the centre.
Draw a diameter and a tangent.
Which is the sector? Which is the segment?
a = Radius
b = Chord
c = Tangent
a = Diameter
b = Arc
c = Segment
a = Radius
b = Chord
c = Tangent
a = Sector
b = Chord
c = Tangent
a = Radius
b = Chord
c = Tangent
a = Diameter
b = Sector
c = Tangent
a = Radius
b = Chord
c = Tangent
a = Arc
b = Radius
c = Segment
a = Radius
b = Chord
c = Tangent
a = Chord
b = Diameter
c = Arc
What is the longest chord you can draw in a circle?
A diameterA chord cuts a circle into two pieces. What is each piece called?
A segment
Name the lines a and b.
a chord, b tangentName the shaded part of the circle.
SegmentAna says this is a segment. Is she right? Explain.
No, a sector (two radii)
Exit tickets to print
