Unit 2 Review

Front

What is a translation in geometry?

Back

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

Front

How do you translate a point (x, y) by a vector (a, b)?

Back

You add the vector components to the point: (x + a, y + b).

Front

What are the new coordinates of point Q(-8, -6) after reflecting across the y-axis?

Back

(8, -6) - The x-coordinate changes sign.

Front

What does the notation R_{O,72^o}( riangle ABC) = riangle A'B'C' represent?

Back

It represents a rotation of triangle ABC around point O by 72 degrees to form triangle A'B'C'.

Front

What is the effect of a rotation on the angles of a shape?

Back

The angles of the shape remain unchanged during a rotation.

Front

What is the distance formula in a coordinate plane?

Back

Front

What is a reflection in geometry?

Back

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

Front

What does the vector (x + 2, y - 3) indicate?

Back

It indicates a translation 2 units to the right and 3 units down.

Front

What is the meaning of the term 'vector' in mathematics?

Back

A vector is a quantity that has both magnitude and direction.

Front

How do you find the distance of a translation given by a vector?

Back

Use the distance formula to calculate the length of the vector.