Circle Exercises

A, B, C and D lie on the circle, centre O.

TA is a tangent to the circle at A.

Angle ABC = 131° and angle ADB = 20°.

Find angle ADC.

(No need to write degrees).

A, B, C and D lie on the circle, centre O.

TA is a tangent to the circle at A.

Angle ABC = 131° and angle ADB = 20°.

Find angle AOC.

(No need to write degrees).

A, B, C and D lie on the circle, centre O.

TA is a tangent to the circle at A.

Angle ABC = 131° and angle ADB = 20°.

Find angle BAT.

(No need to write degrees).

A, B, C and D lie on the circle, centre O.

TA is a tangent to the circle at A.

Angle ABC = 131° and angle ADB = 20°.

Find angle OAB.

(No need to write degrees).

What is the equation of the circle shown in the graph?

Mathematical Equivalence

ON

• chord

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• radius

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• diameter

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Match the following

• tangent

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• a chord

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• a diameter

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• secant

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• a radius

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Complete the Venn diagram.

(Write the answers as the order as the blanks)

Based on the scatterplot, what is the best prediction of the resting heart rate of a person who exercises an average of 8 hours each week?

• 30 beats per minute

• 50 beats per minute

• 55 beats per minute

• 60 beats per minute

Twenty people were surveyed about their favorite color. The information is shown in the circle graph. Which bar graph shows the same information.

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