Illustrative Mathematics - Geometry - Unit 3 - Lesson 6 - Formative Library | Library

Find a sequence of rigid motions and dilations that takes square ABCD to square EFGH.

G.SRT.1.b

G.SRT.1.a

G.CO.6

G.SRT.2

What is our definition of similarity?

If 2 figures have proportional side lengths, then they are similar.

If there is a sequence of rigid transformations taking one figure to another, then they are similar.

If 2 figures have the same angles, then they are similar.

If there is a sequence of rigid transformations and dilations that take one figure to the other, then they are similar.

G.SRT.1.b

G.SRT.1.a

G.CO.6

G.SRT.2

Triangle DEF is formed by connecting the midpoints of the sides of triangle ABC. The lengths of the sides of DEF are shown. What is the length of BC ?

3 units

4 units

6 units

8 units

G.SRT.1.b

G.SRT.1.a

G.CO.6

G.SRT.2

If AB is 12, what is the length of A'B'?

G.SRT.1.b

G.SRT.1.a

G.CO.6

G.SRT.2

A polygon has perimeter 12. It is dilated with a scale factor of k and the resulting image has a perimeter of 8. What is the scale factor?

\frac{1}{2}

\frac{2}{3}

\frac{3}{4}

\frac{4}{3}

G.SRT.1.b

G.SRT.1.a

G.CO.6

G.SRT.2

10.

Select all the statements that must be true.

Both sets of opposite sides of a parallelogram are parallel and congruent.

A trapezoid is a parallelogram.

Diagonals of a parallelogram bisect each other.

Parallelograms have four congruent sides.

Diagonals of a parallelogram are congruent.

G.SRT.1.b

G.SRT.1.a

G.CO.6

G.SRT.2

This lesson is from Illustrative Mathematics. Geometry, Unit 3, Lesson 6. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/2/3/6/preparation.html ; accessed 29/July/2021.

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