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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

5. Tangents

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Exercise 21 Page 755

If two segments from the same exterior point are tangent to a circle, then they are congruent and have the same measure.

4

Practice makes perfect

Consider the given diagram.

If two segments from the same exterior point are tangent to a circle, then they are congruent and have the same measure. We can use this fact to write an equation in terms of x. 5x-9=x+7 Let's solve this equation!

5x-9=x+7

LHS-x=RHS-x

4x-9=7

LHS+9=RHS+9

4x=16

.LHS /4.=.RHS /4.

x=4

Subchapter links

Exercises p.753-757