Spiral Review #1

Front

What does it mean to reflect a point over the x-axis?

Back

To reflect a point over the x-axis, you change the sign of the y-coordinate while keeping the x-coordinate the same. For example, the reflection of (3, -6) is (3, 6).

Front

What is the definition of congruent figures?

Back

Congruent figures are shapes that are the same size and shape. They can be rotated or flipped but will still match perfectly when overlaid.

Front

How do you translate a point in a coordinate plane?

Back

To translate a point, you add or subtract values from the x and y coordinates. For example, translating (2, -3) 4 units up and 5 units to the right results in (7, 1).

Front

What is the result of translating point (2, -3) 4 units up and 5 units to the right?

Back

(7, 1)

Front

If point X is at (1, 4), where would it be after translating 3 units to the left and 9 units down?

Back

(-2, -5)

Front

What does it mean to translate a point 3 units to the left?

Back

To translate a point 3 units to the left, you subtract 3 from the x-coordinate of the point.

Front

What is the effect of translating a point 9 units down?

Back

To translate a point 9 units down, you subtract 9 from the y-coordinate of the point.

Front

If two figures are the same shape but different sizes, are they congruent?

Back

No, they are not congruent. Congruent figures must be the same size and shape.

Front

What is the definition of a coordinate plane?

Back

A coordinate plane is a two-dimensional surface formed by the intersection of a vertical line (y-axis) and a horizontal line (x-axis). Points are located using ordered pairs (x, y).

Front

What does it mean to reflect a point over the y-axis?

Back

To reflect a point over the y-axis, you change the sign of the x-coordinate while keeping the y-coordinate the same.