Geometry Midterm Review

Front

What is a reflection in geometry?

Back

A reflection is a transformation that flips a figure over a line, creating a mirror image.

Front

What is the result of reflecting a point (x, y) across the x-axis?

Back

The result is the point (x, -y).

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a figure around a fixed point, called the center of rotation.

Front

What is the result of rotating a point (x, y) 90 degrees counterclockwise around the origin?

Back

The result is the point (-y, x).

Front

What is a translation in geometry?

Back

A translation is a transformation that moves a figure from one location to another without changing its shape or orientation.

Front

If a triangle is translated 2 units down, what happens to its coordinates?

Back

Each point of the triangle has its y-coordinate decreased by 2.

Front

What is the angle of rotation for a 180-degree rotation?

Back

A 180-degree rotation turns a figure halfway around a circle.

Front

How do you solve for x in an equation?

Back

To solve for x, isolate x on one side of the equation using inverse operations.

Front

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

Back

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

Front

What is the formula for the area of a triangle?

Back

The area of a triangle is given by the formula: Area = 1/2 * base * height.