Circles.

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Presentation transcript:

Circles

Parts of a Circle Centre

Parts of a Circle Diameter (must go through the centre)

Parts of a Circle Radius (half a diameter – from the outside to the centre)

Parts of a Circle Sector (like a slice of pizza)

Parts of a Circle Chord (a line that crosses the circle but not through the centre)

Parts of a Circle Segment (looks a bit like an orange segment)

Parts of a Circle Circumference (the perimeter of the circle)

Parts of a Circle Arc (part of the circumference)

Parts of a Circle Tangent (a line that touches the circle at a single point on the circumference

Parts of a Circle Semicircle (half a circle)

What is this? Radius

What is this? Semicircle

What is this? Centre

What is this? Diameter

What is this? Chord

What is this? Sector

What is this? Circumference

What is this? Segment

What is this? Tangent

What is this? Diameter

What is this? Sector

What is this? Semicircle

What is this? Segment

What is this? Chord

What is this? Tangent

What is this? Arc

Homework: Learn these words (meanings & spellings)