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Big Ideas Math Integrated I, 2016 View details

4. Equilateral and Isosceles Triangles

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Exercise 3 Page 609

The triangle is equiangular.

$5$

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From the diagram, we see that one of the triangle's sides is $5 .$ According to the Corollary to the Converse of the Base Angles Theorem, if a triangle is equiangular, then it is equilateral. This means all of the triangle's sides are $5,$ including $\overline{S T} .$

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Communicate Your Answer p.607

Monitoring Progress p.609-611

Exercises p.612-614

Exercise 3 Page 609

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