circles. a circle is the set of all points in a plane that are at a given distance from a center....
TRANSCRIPT
Circles
A circle is the set of all points in a plane that are at a given distance from a center.
What What isis it? it?
Parts of a Circle
CenterCenterThe midpoint of a circle is
Parts of a CircleCircumferenceCircumference The outside of the circle is called
Parts of a Circle
DiameterDiameter (must go through the center)
The line that divides the circle into 2 equal parts.
Parts of a Circle
RadiusRadius (half a diameter – from the outside to the center)
The line drawn from the centre to the circumference is …
Parts of a Circle
SectorSector (like a slice of pizza)
Parts of a CircleChordChord
A line that connects one point on the edge of the circle with another point on the circle but not through the centeris called ….
Parts of a CircleSegmentSegment (looks a bit like an orange segment)
Is a part of the circumference of the circle .
Parts of a Circle
ArcArc (part of the circumference)
Parts of a Circle
TangentTangent(a line that touches the circle at a single point on the circumference
Parts of the Circle
centre
radius
diameter
chord
arc
Parts of a Circle
SemicircleSemicircle(half a circle)
What is this?
RadiusRadius
What is this?
SemicircleSemicircle
What is this?
CenterCenter
What is this?
DiameterDiameter
What is this?
ChordChord
What is this?
SectorSector
What is this?CircumferenceCircumference
What is this?SegmentSegment
What is this?
TangentTangent
What is this?
DiameterDiameter
What is this?
SectorSector
What is this?
SemicircleSemicircle
What is this?
SegmentSegment
What is this?
ChordChord
What is this?
TangentTangent
What is this?
ArcArc
Homework: Learn these words(meanings & spellings)
• Here are some pictures made with circles, both art and nature!!
On paper make this simple circles picture
• Your turn:
• Draw a circle. •
• Make the second circle like this: with its center at a circumference point on the first circle, and ending at the center of the first circle.
•
• Make the third circle like this: with its center at the intersection of the first two circles, and ending at the center of the first circle.
• Keep making circles like that last one, until you have six circles surrounding the center one.
•
• You can now color
• Add build on your design
