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1 Circles and Loci.notebook
1
October 29, 2015
Feb 1408:16
L.O.• draw circles and arcs with a given radius• find and draw a locus of points around a point• find and draw a locus of points around a line• use locus of points to find regions satisfying prescribed conditions
Circles and Loci Date
Feb 1408:22
Key Words for this Lesson
CircumferenceArcRadiusDiameterChordSegmentSector
Feb 1408:21
circles and arcs with a given radius (G)Main 1:
radius4cm
Draw a circle with a radius ofa) 4cmb) 5cm
c) 6 squares of your book
Draw a circle with a diameter of 14cm.
Feb 1414:01
locus of points around a point (D)Main 2:
This is Woof the dog.He wears a lead that is 2m long when
he is left out in the middle of the garden.
Feb 1414:08
locus of points around a point (D)Main 1:
Feb 1414:01
locus of points around a point (D)Main 2:
This is Woof's brother, Bark.Poor Bark has a lead of length only 1m
long!
1 Circles and Loci.notebook
2
October 29, 2015
Oct 2309:57 Feb 1414:08
locus of points around a point (D)Main 1:
Feb 1414:08
locus of points around a point (D)Main 1:
Shade the region where Woof and Barks could meet.
Oct 2217:47
locus of points around a point (D)Main 1:
Feb 1417:05
If 1cm on the map is 100m in real life then how many cm on the map is:
a) 100m b) 200mc) 550m
locus of points around a point (D)Main 1:
Feb 1417:05
locus of points around a point (D)Main 1:
If 1cm on the map is 100m in real life the how many m in real life is:
a) 3cmb) 12cmc) 5cm
1 Circles and Loci.notebook
3
October 29, 2015
Oct 2217:47
locus of points around a point (D)Main 1:A Eastern Delight“We will deliver for free anywhere in a 2km radius.”
Oct 2217:47
locus of points around a point (D)Main 1:B Subway“Subway will not deliver anywhere for free but for a fee we will deliver anywhere in a 200m radius.”
Oct 2217:47
locus of points around a point (D)Main 1:
Feb 1417:04
Lucy lives on Barerstr. She wants to order some food to be delivered to her house.
a) Lucy‛s first choice of delivery food is Chilli Hot. Will they deliver to her house?
b) Lucy‛s second choice of delivery food is KFC. Will they deliver to her house?
locus of points around a point (D)Main 1: