Unit Objectives Prior Knowledge/For Review – Students should be able to:
Find the area and circumference of a circle
Find the area and perimeter of a sector
Vocabulary of circles: radius, diameter, circumference, sector, arc, semicircle
Find missing angles on parallel lines
IGCSE Core Learning Objectives – Students should be able to:
Use and interpret the vocabulary of circles
Know and use the following properties of circles:
o Tangent is perpendicular to radius at the point of contact (Video 4.01) o Tangents from a point are equal (Video 4.02) o Angle in a semicircle is right angle(Video 4.03)
IGCSE Extended Learning Objectives – Students should be able to:
Know and use the following properties of circles: (4.7)
o Angle at the centre is twice angle at the circumference (Video 4.04) o Angles at the circumference on the same arc are equal(Video 4.05) o Opposite angle in cyclic quadrilateral add to 180(Video 4.06)
Solve problems involving area, circumference and properties of circles, arcs and sectors (Video 4.07) (Video 4.08)
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