Unit 7 Flashcard Review

Front

What is a 45-45-90 triangle?

Back

Front

How do you determine if three sides can form a triangle?

Back

To determine if three sides can form a triangle, use the triangle inequality theorem: the sum of the lengths of any two sides must be greater than the length of the third side.

Front

What is the Pythagorean theorem?

Back

Front

What is an acute triangle?

Back

An acute triangle is a triangle where all three angles are less than 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle greater than 90 degrees.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle equal to 90 degrees.

Front

What is the formula for the area of a triangle?

Back

Front

What is the relationship between the sides of a 30-60-90 triangle?

Back

Front

How do you find the length of a side in a right triangle?

Back

To find the length of a side in a right triangle, you can use the Pythagorean theorem or trigonometric ratios (sine, cosine, tangent) depending on the information given.

Front

What is the definition of a hypotenuse?

Back

The hypotenuse is the longest side of a right triangle, opposite the right angle.