Reviewing 7th Grade Math Concepts 10.7 and 10.8

What is a transformation in geometry?

• A method to measure angles

• A movement of a figure in a plane

• A type of geometric proof

• A formula for calculating area

What does a translation involve?

• Rotating a figure around a point

• Moving each point of a figure the same distance in the same direction

• Reflecting a figure across a line

• Changing the size of a figure

Which axis is involved in the reflection example provided?

• X-axis

• Y-axis

• None

• Z-axis

What is the angle of rotation in the given example?

• 270 degrees

• 90 degrees

• 45 degrees

• 180 degrees

What type of symmetry does a rectangle have?

• Neither

• Both line and rotational symmetry

• Rotational symmetry only

• Line symmetry only

How is a translation described using coordinate notation?

• By rotating coordinates

• By subtracting from one coordinate and adding to another

• By swapping coordinates

• By multiplying coordinates

What changes occur to the coordinates in a reflection over the Y-axis?

• Y coordinates are negated

• No changes to coordinates

• X coordinates are negated

• Both coordinates are negated

If a figure is translated left by 2 units and down by 5 units, how is this represented in coordinate notation?

• X-2, Y-5

• X+2, Y-5

• X+2, Y+5

• X-2, Y+5

What are the new coordinates of a point after a translation of X+3, Y-4?

• 3 units right and 4 units up

• 3 units left and 4 units down

• 3 units right and 4 units down

• 3 units left and 4 units up

How do you determine the new points after reflecting a figure on the X-axis?

• Subtract from the Y coordinates

• Add to the X coordinates

• Multiply the Y coordinates by -1

• Multiply the X coordinates by -1