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McGraw Hill Integrated II, 2012

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McGraw Hill Integrated II, 2012 View details

5. Isosceles and Equilateral Triangles

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Exercise 14 Page 378

Consider the Isosceles Triangle Theorem.

∠ AFH ≅ ∠ AHF

Practice makes perfect

Before we begin, let's use the given information to mark the congruent sides of the given figure.

To name two congruent angles, we will use the Isosceles Triangle Theorem.

Isosceles Triangle Theorem
If two sides of a triangle are congruent, then the angles opposite those sides are congruent.

Using this theorem, let's show the congruent angles.

We can see that ∠ AFH is congruent to ∠ AHF. ∠ AFH ≅ ∠ AHF

Subchapter links

Exercises p.378-382