Front

What is the definition of congruent triangles?

Back

Triangles that have the same size and shape.

Front

What does HL stand for in triangle congruence?

Back

Hypotenuse-Leg, a method to prove the congruence of right triangles.

Front

What is the transformation represented by (x, y) --> (x + 2, y - 3)?

Back

A translation 2 units to the right and 3 units down.

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 * base * height.

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 a polygon?

Back

A closed figure with three or more straight sides.

Front

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

Back

180 degrees.

Front

What is the difference between a radius and a diameter?

Back

Radius is half the diameter; diameter is twice the radius.

Front

What is the definition of a circle?

Back

A set of points in a plane that are equidistant from a fixed point called the center.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 * π * radius.