Slope with Slope Triangles

Identify the slope (AC) of triangle ABC.

• 2

• 1/2

• -2

• -1/2

Identify the slope of EF in triangle DEF.

• 1

• -1

• 3

• -3

Triangles ABC and DEF are similar. The slope of triangle ABC is...

• which is the same as the slope of triangle DEF.

• 3/4 which is the slope of hypotenuse of triangle DEF.

• 4/3 which is the slope of triangle DEF.

• -1 which is the same as the slope of triangle DEF.

Which statement is not true?

• A and B

• D only

• C only

• A, B and D

Any slope triangle used to find the slope of a given line will

• vary.

• be similar triangles with same slope.

• be an isosceles triangle.

When given two similar triangles on the same line, they will ALWAYS have the same _______________?

• y-intercept

• x

• slope

• y

Use graph paper to plot the points. Draw a line from one point to the other. Create a "slope triangle." Remember the slope is the height of the triangle divided by the base.

Find the slope between points (1,2) and (2,5).

• 3/1

• 1/3

• 2/5

• 1/2

Triangles ABC and DEF are similar. The slope of the hypotenuse of ABC is...

• The same as the hypotenuse of triangle DEF

• 3/4  the slope of hypotenuse of triangle DEF

• 4/3  the slope of hypotenuse of triangle DEF

Which statement about slope triangles is FALSE?

• Slope triangles can help you visualize how steep a line is.

• A slope triangle can help you find the slope of a line.

• Slope triangles are only helpful when a line has positive (upward) slope.

Find the slope of the line using slope triangles

• 1

• 4

• Undefined

• 0