Lesson 3 Prove It! Practice Understanding

Ready

Find the values that will make the equations true.

1.

2.

3.

4.

5.

6.

7.

8.

Set

Use the figure for problems 9–11.

Quadrilateral PQRS P(-7,3), Q(-2,7), R(2,2), S(-3,-2). Quadrilateral PQRS P(-7,3), Q(-2,7), R(2,2), S(-3,-2). x–5–5–5y555000

9.

Is quadrilateral a rectangle? Justify your answer.

10.

Is quadrilateral a rhombus? Justify your answer.

11.

Is quadrilateral a square? Justify your answer.

12.

Classify quadrilateral . Justify your answer.

Quadrilateral ABCD A(-8,-1) B(-3,2) C(1,-2) and D(-4,-5) x–5–5–5y–5–5–5000

Go

Find the exact perimeter of each figure. Then round your answers to the nearest thousandths place.

13.

Quadrilateral with vertices (-5,2), (2,6), (4,0), (-3,-4) x–5–5–5555y–5–5–5555000

14.

Triangle with vertices (-5,2), (4,-2) (2,6) x–5–5–5y555000

15.

Circle with center (1,3) and radius 3 x–2–2–2222444y555000

16.

Triangle with vertices (-6,5), (-2,2), (-4,-3) x–5–5–5y555000

17.

Quadrilateral with vertices (-6,-3), (-4,2) (2,2) (6,-3) x–5–5–5555y–2–2–2222000

18.

Semicircle with center (2,1) x–2–2–2222444y222444000