Front

What is a trapezoid?

Back

A trapezoid is a four-sided figure (quadrilateral) with at least one pair of parallel sides.

Front

What transformation carries a trapezoid onto itself?

Back

A reflection across the y-axis.

Front

How do you find the measure of an angle when given two other angles in a triangle?

Back

Use the fact that the sum of angles in a triangle is 180°. For example, if m ∠POK = 82° and m ∠POR = 50°, then m ∠ROK = 180° - (82° + 50°) = 48°.

Front

What is the formula for finding the midpoint between two points (x1, y1) and (x2, y2)?

Back

Midpoint = ((x1 + x2)/2, (y1 + y2)/2).

Front

What are the coordinates of the midpoint between (-6, 11) and (-8, -4)?

Back

(-7, 3.5).

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to produce a new shape.

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 a translation in geometry?

Back

A translation is a transformation that moves every point of a figure the same distance in the same direction.

Front

What is the difference between a rotation and a reflection?

Back

A rotation turns a figure around a fixed point, while a reflection flips it over a line.

Front

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

Back

The sum of the interior angles of a hexagon is 720°.