Reflecting Lines in Geometry

What transformation tool is used to mirror a line across another line?

• Translation

• Reflection

• Rotation

• Dilation

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which line is used as the axis of reflection in the video?

• y = 4

• x = -4

• y = -4

• x = 4

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

After reflecting a line across y = -4, what type of geometric figure is created?

• A line

• A line segment

• A point

• A circle

Tags

CCSS.4.G.A.1

Why does a reflected line not have endpoints?

• Because it is a closed shape

• Because it turns into a point

• Because it is infinite in both directions

• Because it becomes a circle

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What would happen if both points on a line were endpoints before reflection?

• It would remain a line

• It would become a ray

• It would become a line segment

• It would become a circle

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

How can you confirm that a reflected image across y = -4 is correct?

• By checking if it's a circle

• By ensuring it has endpoints

• By verifying it remains a line

• By transforming it into a point

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5