Module 2: Test 3

Translations

100

What occurs during a translation?

A slide across the plane.

200

If you are asked to translate a figure along a vector and that vector is pointed to the right, which direction should the figure "slide"?

Right

300

True or False: A translation is a flip over a line.

False

400

If line L₁ is translated along vector AB which is contained inside of L₁, what do we know about L₁ and L₁'?

They coincide.

500

If angle ABC has a measure of 150^o and we translate it (5,-5), what will the measure of angle Translation(ABC) be?

150^o

Reflections

100

What occurs during a reflection?

A "flip" over the line of reflection.

200

How long should segment A'B' be if segment AB is 7.372 units?

7.372 units

300

What is the line called that we "flip" the figure or point over when we perform the reflection?

Line of reflection

400

If we reflect point I over the line of reflection, what do we know about the distance from I to the line of reflection compared to the distance from I' to the line of reflection?

They are equidistant or the same length/distance.

500

If you have a line L that has point T on the line and there is a reflection, what is the relation between T and T'?

They are equal. T = T'

Rotations

100

What occurs during a rotation?

A figure is turned around a fixed point.

200

What way do you rotate a figure about the origin if d<0?

Clockwise

300

What is the fixed point know as that a figure is turned around during a rotation?

Center of rotation.

400

If we have L₁ and L₂ and they are parallel to each other and are then rotated around point O, what do we know about L₁' and L₂'?

They remain parallel.

500

If point A is at (2,-4) and you are asked to rotate it about the origin (0,0), what are the coordinates for A'?

(-2,4)

Mixed Review

100

What are the three basic rigid motions?

Translation, reflection, and rotation

200

True or False: All transformations map segments to segments and preserve their length

True

300

True or False: The three basic rigid motions are angle preserving.

True

400

True or False: When you reflect a figure the reflection should be larger than the original.

False

500

If point P is at coordinate points (6,-7) and you are asked to translate (3,5), what are the coordinate points for P'?

(9,-2)

Vocabulary

100

A rigid motion that slides a figure in a straight line from one position to another without changing its size, shape, or orientation.

Translation

200

What is it called when two lines intersect forming a right angle?

Perpendicular

300

What is the term we use for how we label a transformed figure or point? Hint: (Symbol is ')

Prime

400

A transformation that turns a figure around a fixed point.

Rotation

500

The word for when two figures are the same size and shape.

Congruent