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Glencoe Math: Course 2, Volume 2 View details

3. Triangles

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Exercise 17 Page 561

Check the angle measures.

Right scalene triangle

Practice makes perfect

We will classify the triangle marked on the wing of the hummingbird. Let's review how to classify triangles by their sides and angles.

Classification of Triangles
By Angle Measures		By Side Lengths
Acute Triangle	All angles are acute.	Scalene Triangle	All three sides have different lengths.
Right Triangle	One angle is a right angle.	Isosceles Triangle	Exactly two sides have the same length.
Obtuse Triangle	One angle is an obtuse angle.	Equilateral Triangle	All side lengths are congruent.
Equiangular Triangle	All angle measures are congruent.	Equilateral Triangle	All side lengths are congruent.

Now, let's take a look at the triangle part of the given figure!

One of the angles is a right angle. Since this triangle has a right angle, this is a right triangle. We can see that all sides have different lengths. This means that the triangle is a right scalene triangle.

Subchapter links

Guided Practice p.558

Independent Practice p.559-560

H.O.T. Problems p.560

Standardized Test Practice p.560-562

Extra Practice p.561

Common Core Review p.562

Exercise 17 Page 561

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