Similar Triangles

What is the slope of the line shown by the similar triangles in the graph?

• -4/3 = -8/6 = /4/3

• -4/-3 = -8/-6 = 4/3

• 3/-4 = 6/-8 = -3/4

• 3/4 = 6/8 = 3/4

Triangles ABC and A'B'C' are shown in the coordinate plane.

Which statement describes a sequence of transformations that can be used to verify that triangle A'B'C' is similar to triangle ABC?

• Reflect triangle ABC across the x-axis, followed by a dilation with a scale factor of 2 about the origin.

• Reflect triangle ABC across the y-axis, followed by a dilation with a scale factor of 1/2 about the origin.

• Reflect triangle ABC across the x-axis, followed by a dilation with a scale factor of 1/2 about the origin.

• Reflect triangle ABC across the y-axis, followed by a dilation with a scale factor of 2 about the origin.

Are the triangles similar?

• Yes

• No

Which is NOT true about similar triangles.

• The angles in the triangles are congruent to each other.

• The sides are proportional to each other.

• The angles in each triangle add up to 180^o.

• The triangles must have at least one side that is the same length.

Are the triangles similar?

• Yes

• No

How long is side x?

• 3

• 1.5

• 8

• 2/3

Which triangles are similar to triangle A?

• B

• C

• Both

• None

Find side length X.

• 30

• 25

• 15

• 40

What does it mean for two shapes to be similar?

• Same shape, but different size.

• Same size and same shape.

• Their angles add up to 180^o.

• They are congruent.

How do these triangles appear to be similar?

• AA

• SAS

• SSS

• Not Similar