Chapter 4: Congruent Triangles Practice

Front

What is an acute triangle?

Back

A triangle where all three angles are less than 90 degrees.

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What is an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What does the ASA congruence theorem state?

Back

If two angles and the included side of one triangle are equal to two angles and the included side of another triangle, the triangles are congruent.

Front

What does the SAS congruence theorem state?

Back

If two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle, the triangles are congruent.

Front

What does the SSS congruence theorem state?

Back

If all three sides of one triangle are equal to all three sides of another triangle, the triangles are congruent.

Front

What is the measure of angle 1 if it is given that angle 1 + angle 2 = 180 degrees and angle 2 = 65 degrees?

Back

Angle 1 = 115 degrees.

Front

How do you find the value of x in a triangle?

Back

Use the properties of triangles, such as the sum of angles in a triangle equals 180 degrees or congruence theorems.

Front

What is the relationship between the angles in a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.