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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

5. Isosceles and Equilateral Triangles

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Exercise 9 Page 378

Consider the Isosceles Triangle Theorem.

∠ ABE ≅ ∠ AEB

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 ∠ ABE is congruent to ∠ AEB. ∠ ABE ≅ ∠ AEB

Subchapter links

Exercises p.378-382