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Triangle Solutions Using the Incenter — Practice Geometry Questions

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Updated:  
2016-03-26 07:10:04
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Geometry Essentials For Dummies
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In geometry, the point in a triangle where the angle bisectors of the triangle intersect is called the incenter. The following practice questions test your skills at finding the incenter of a given triangle.

Practice questions

Point I is the incenter of triangle CEN. Use the following figure and the given information to solve the problems.

image0.png
  1. If

    image1.png
  2. If

    image2.png

    is represented by 2c, and

    image3.png

    is represented by 2b + c, find the value of b.

Answers and explanations

  1. 26 degrees

    The incenter of a triangle is the point where the bisectors of each angle of the triangle intersect. A bisector divides an angle into two congruent angles.

    Find the measure of the third angle of triangle CEN and then cut the angle in half:

    image4.png
  2. 4

    The incenter of a triangle is the point where the bisectors of each angle of the triangle intersect. A bisector divides an angle into two congruent angles.

    image5.png

About This Article

This article is from the book: 

About the book author:

Allen Ma is a math teacher at John F. Kennedy High School in Bellmore, NY. Allen has taught geometry for more than 25 years, has coached the math team, and is a former honors math research coordinator.

Amber Kuang is a math teacher at John F. Kennedy High School in Bellmore, NY. Amber has taught all levels of math, from algebra to calculus, for 20 years.