Geometry midterm review

Front

What does CPCTC stand for?

Back

Corresponding Parts of Congruent Triangles are Congruent.

Front

In triangle ABC, if m∠A = 3x + 1, m∠B = 4x - 17, and m∠C = 5x - 20, which type of triangle is ABC?

Back

Isosceles.

Front

Which geometric principle justifies that when two lines are intersected by a transversal and the corresponding angles are congruent, the lines are parallel?

Back

When two lines are intersected by a transversal and the corresponding angles are congruent, the lines are parallel.

Front

What is the angle relationship called when two angles are on opposite sides of the transversal but inside the two lines?

Back

Alternate Interior.

Front

What is the value of x if the equation is set up as follows: 2x + 3 = 13?

Back

5.

Front

What is the definition of a triangle?

Back

A polygon with three edges and three vertices.

Front

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

Back

180 degrees.

Front

What is the definition of congruent triangles?

Back

Triangles that have the same size and shape.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is the definition of parallel lines?

Back

Lines in a plane that never meet and are always the same distance apart.