Year 11
Higher

Circle Theorems: A tangent and radius are perpendicular at the point of contact

Year 11
Higher

Circle Theorems: A tangent and radius are perpendicular at the point of contact

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Lesson details

Key learning points

  1. In this lesson, we will learn that a tangent and radius are perpendicular at the point of contact. We will prove this result with a general case.

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3 Questions

Q1.
Work out the size of angle x.
An image in a quiz
180º
360º
45º
Correct answer: 90º
Q2.
Work out the size of angle x.
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158º
Correct answer: 22º
68º
90º
Q3.
Which statement is correct about the diagram shown.
An image in a quiz
Line AB < Line AC
Correct answer: Line AB = Line AC
Line AB > Line AC