Q2: Homework#6(11/20 Flashcardziz) Review Problems for Quiz#2

Front

What is a rotation in geometry?

Back

A rotation is a transformation that turns a figure around a fixed point, called the center of rotation, by a certain angle in a specific direction.

Front

What is the angle of rotation?

Back

The angle of rotation is the measure of the degree through which a figure is rotated around a point.

Front

How many lines of symmetry does a shape have if it can be divided into two identical halves?

Back

The number of lines of symmetry is the number of ways a shape can be divided into two identical halves.

Front

What is line symmetry?

Back

Line symmetry, or reflectional symmetry, occurs when a shape can be divided into two mirror-image halves.

Front

What is rotational symmetry?

Back

Rotational symmetry exists when a shape can be rotated around a center point and still look the same at certain angles.

Front

What geometric figure has exactly one line of symmetry?

Back

An isosceles trapezoid has exactly one line of symmetry.

Front

What is a dilation in geometry?

Back

A dilation is a transformation that changes the size of a figure but not its shape, by a scale factor.

Front

What is a translation in geometry?

Back

A translation is a transformation that moves a figure from one location to another without changing its shape or orientation.

Front

What is the difference between line symmetry and rotational symmetry?

Back

Line symmetry involves dividing a shape into two identical halves, while rotational symmetry involves rotating a shape around a point and having it look the same at certain angles.

Front

How do you determine the number of lines of symmetry in a polygon?

Back

To determine the number of lines of symmetry in a polygon, you can draw lines through the vertices and midpoints to see how many ways the shape can be divided into mirror-image halves.