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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

1. Angles of Triangles

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Exercise 39 Page 593

An isosceles triangle has two congruent sides.

See solution.

Practice makes perfect

Let's illustrate the bent strip of metal.

To create an isosceles triangle, we have to bend the 14-inch piece so that we get, for the whole strip, two sides with the same length. For example, we can bend it to obtain two sides that are 6 inches and one that is 8 inches long. Notice that we have to adjust the angle of the first bend.

We can also bend the 14-inch piece so that two sides are 7 inches like below.

Subchapter links

Communicate Your Answer p.587

Monitoring Progress p.588-591

Exercises p.592-594