Chapter 5.5

Front

Can a triangle be formed with side lengths: 4, 7, 10?

Back

Yes, a triangle can be formed with these side lengths.

Front

What is the smallest angle in a triangle with sides 4, 7, and 10?

Back

∠B is the smallest angle.

Front

What is the range of values the third side of a triangle could be if two sides are 4 and 7?

Back

The third side must be greater than 3 and less than 11.

Front

Name the angles from SMALLEST to LARGEST in a triangle with angles ∠P, ∠Q, ∠R.

Back

The order from smallest to largest is ∠R, ∠P, ∠Q.

Front

Does a triangle with side lengths 15, 12, and 9 exist?

Back

Yes, a triangle with these side lengths exists.

Front

What is the Triangle Inequality Theorem?

Back

The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Front

If two angles of a triangle are 30° and 60°, what is the third angle?

Back

The third angle is 90°.

Front

What is the relationship between the sides and angles of a triangle?

Back

In a triangle, the larger the angle, the longer the opposite side.

Front

How do you find the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the formula for the perimeter of a triangle?

Back

Perimeter = side1 + side2 + side3.