Identifying Corresponding Parts in Similar Figures

What are corresponding parts in similar figures?

• Parts that are the same size

• Parts that are at the same angle

• Parts that occupy the same relative position

• Parts that have the same color

Which segment corresponds to segment EF in the similar triangle?

• Segment DE

• Segment BC

• Segment AC

• Segment FA

What does angle DF II correspond to in the other triangle?

• Angle BAC

• Angle CBA

• Angle ACB

• Angle EFD

Which of the following is true about corresponding angles in similar figures?

• They are always obtuse

• They are congruent

• They are complementary

• They are supplementary

What is a scale factor in geometry?

• A method to determine the perimeter of a figure

• A formula to calculate the area of a figure

• A technique to find the height of geometric figures

• A number used to multiply the side lengths to form a new figure

What scale factor is used from triangle ABC to triangle DEF?

• 1.5

• 2/3

• 2

• 3/2

If a side length in triangle ABC is 6, what is the corresponding side length in triangle DEF using the scale factor?

• 9

• 18

• 12

• 4.5

What is the reverse scale factor from triangle DEF to triangle ABC?

• 2/3

• 1.5

• 3/2

• 2

Using the reverse scale factor, what is the side length in triangle ABC if it is 9 in triangle DEF?

• 4.5

• 6

• 13.5

• 18

What should you do to verify your understanding of today's lesson?

• Write an essay

• Review the lesson goals

• Start a new lesson

• Discuss with a friend