T3.W1.D1 Classwork

• Angle E'

• 170°

• Angle H'

• 160°

• Angle K'

• 25°
• Angle L'

• 35°

What is the measure of angle A'?

• 43°

• 54°

• 83°

• 90°

If Avery reflects triangle PQR across the y-axis ti form triangle KLM, what is the measure of angle

L?

• 50°

• 100°

• 30°

• 85°

A triangle P'Q'R' is obtained by reflecting across the y-axis. What is the measure of angle P'Q'R'?

• 16

• 74

• 106

• 148

If the quadrilateral is reflected across the x-axis, producing quadrilateral m'n'p'q'

, which interior

angle is equal to 50

• angle m

• angle n

• angle p

• angle q

If the quadrilateral is reflected across the x-axis, producing quadrilateral m'n'p'q'

, what is the

measure of <m'?

• 90

• 120

• 100

• 50

What is the length of line segment K'N'?

• 3

• 6

• 9

What is the length for the resulting line segment?

• 9 units

• 6 units

• 5 units

• 4 units

The line segment is 20 units long. If the line segment is translated up 6 units and left 8 units, which statement is true?

• The length of the resulting line segment is 4 units because translation decreases length

• The length of the resulting line segment is 20 units because translation preserves length

• The length of the resulting line segment is 34 units because translation increases length

• The length of the resulting line segment cannot be determined

Two parallel lines are drawn on a coordinate plane so that their slopes are equal. If these two lines are reflected across the x-axis, then rotated 180 degrees about the origin, what is the relationship between the resulting two lines?

• The lines are parallel to each other

• The lines are perpendicular to each other

• The lines intersect at exactly one point

• The lines intersect at exactly two points