Coordinate Geometry

Front

What formula do you use to decide if there is a right angle based on coordinates?

Back

Slope formula: If the product of the slopes of two lines is -1, they are perpendicular, indicating a right angle.

Front

What is the most precise classification for a quadrilateral with all sides equal and opposite angles equal?

Back

Rhombus: A quadrilateral with all sides equal and opposite angles equal.

Front

What is the most precise classification for a quadrilateral with opposite sides equal and angles that are not necessarily right angles?

Back

Parallelogram: A quadrilateral with opposite sides equal and opposite angles equal.

Front

Which of the following is NOT true for a rectangle?

Back

Diagonals are perpendicular: This statement is false; in a rectangle, diagonals are congruent but not perpendicular.

Front

What is the midpoint of the diagonals in a parallelogram ABCD?

Back

((a+c)/2, b/2): The midpoint of the diagonals in a parallelogram is the average of the x-coordinates and the average of the y-coordinates of the endpoints.

Front

What is the distance formula used to find the distance between two points (x1, y1) and (x2, y2)?

Back

Distance = √((x2 - x1)² + (y2 - y1)²)