Circle Theorem Tangent Lines

Find the m<CED.

• 36°

• 46°

• 55°

• 70°

Determine x.

• 32

• 16

• 64

• 21

What is d?

• 78

• 102

• 117

• 21

Calculate q.

• 40

• 140

• 128

• 52

Which circle theorem rule is used to find angle x?

• The angle at the circumference in a semicircle is 90°

• Inscribed angles that intersect the same arc are congruent.

• A tangent meets a radius at 90°
  

• The central angle is twice the inscribed angle of the same arc.

Find the value of X

• 3

• 16

• 8

• 12

What is the value of x?

• A

• B

• C

• D

A point B is 17cm away from the centre O of a circle. AB is the tangent to the circle at A. Given that AB = 15 cm, find the radius of the circle.

• 8 cm

• 9 cm

• 2 cm

• 16 cm

If a line is tangent to a circle, then it is ________ to the radius drawn to the point of tangency.

• parallel

• adjacent

• supplementary

• perpendicular

Assume that the lines that appear to be tangent are tangent. O is the center of the circle. Find the value of x to the nearest tenth.

• 11.7

• 10.8

• 13.0

• 14.2