Congruent Triangles

Front

What is a congruent triangle?

Back

A triangle that is identical in shape and size to another triangle, meaning all corresponding sides and angles are equal.

Front

Classify a triangle with two equal sides.

Back

Isosceles triangle.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

What is the Exterior Angle Theorem?

Back

The theorem states that the measure of an exterior angle of a triangle is equal to the sum of the measures of the two opposite interior angles.

Front

If two angles of a triangle are 40° and 60°, what is the measure of the third angle?

Back

80°.

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths and all angles of different measures.

Front

What is an equilateral triangle?

Back

A triangle in which all three sides are equal in length and all three angles are equal, each measuring 60°.

Front

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

Back

Use the fact that the sum of the angles in a triangle is 180° to set up an equation.

Front

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

Back

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

Front

If two triangles are congruent, what can be said about their corresponding parts?

Back

Their corresponding sides and angles are equal.