Geometry TNReady Review Practice 4 EOC

Front

What is a translation in geometry?

Back

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

Front

How do you find the coordinates of a point after a translation?

Back

To find the new coordinates after a translation, add the translation values to the original coordinates. For example, if the translation is (x-5, y+3), and the original point is (7,-6), the new point is (7-5, -6+3) = (2,-3).

Front

What happens to the coordinates of a point when it is reflected across the x-axis?

Back

When a point (x, y) is reflected across the x-axis, its new coordinates become (x, -y).

Front

How many lines of symmetry does a regular pentagon have?

Back

A regular pentagon has 5 lines of symmetry.

Front

What is the smallest angle of rotation that maps a regular polygon to itself?

Back

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 center of rotation?

Back

The center of rotation is the fixed point around which a figure rotates.

Front

How do you determine the image of a point after a rotation?

Back

To determine the image of a point after a rotation, you need to know the angle of rotation and the center of rotation. Use geometric rules or rotation matrices to find the new coordinates.

Front

What is the formula for finding the coordinates of a point after a 90° clockwise rotation about the origin?

Back

The formula for a 90° clockwise rotation about the origin is (x, y) -> (y, -x).

Front

What is the difference between a line of symmetry and a rotational symmetry?

Back

A line of symmetry divides a figure into two identical halves, while rotational symmetry means a figure can be rotated around a point and still look the same at certain angles.