*EOC Review Practice #4 Geometry*

Front

What is a line of symmetry?

Back

A line of symmetry is a line that divides a shape into two identical parts that are mirror images of each other.

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 shape onto itself?

Back

The smallest angle of rotation that maps a regular pentagon onto itself is 72°.

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way, such as translation, rotation, reflection, or dilation.

Front

What does it mean to reflect a shape across the x-axis?

Back

Reflecting a shape across the x-axis means flipping it over the x-axis, changing the sign of the y-coordinates of its points.

Front

What are the coordinates of point B(7,-6) after a translation of (x,y) → (x-5,y+3)?

Back

The coordinates of point B after the translation are B(2,-3).

Front

What is the effect of translating a shape up by 3 units?

Back

Translating a shape up by 3 units increases the y-coordinate of each point of the shape by 3.

Front

What does it mean to rotate a shape 90 degrees counterclockwise around the origin?

Back

Rotating a shape 90 degrees counterclockwise around the origin means turning the shape 90 degrees in the opposite direction of the clock's hands around the origin point (0,0).

Front

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

Back

The result of reflecting a point (x,y) across the x-axis is the point (x,-y).

Front

What is a translation in geometry?

Back

A translation is a type of transformation that slides a shape from one position to another without rotating or flipping it.