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Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

4. Using Similar Triangles

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Exercise 9 Page 127

When two angles in one triangle are congruent to two angles in another triangle, the third angles are also congruent and the triangles are similar.

Yes, see solution.

Practice makes perfect

We want to determine whether the given triangles are similar.

triangles

Recall that when two angles in one triangle are congruent to two angles in another triangle, the third angles are also congruent and the triangles are similar. We can see in the diagram that the triangles have two pairs of congruent angles. Therefore, the triangles are similar.

Subchapter links

Try It p.124-125

Self-Assessment for Concepts & Skills p.125

Self-Assessment for Problem Solving p.126

Review & Refresh p.127

Concepts, Skills, & Problem Solving p.127-128