Lesson Practice 105 a

Lesson ⎡-2 d. ⎢ ⎣ 1

Warm Up 105 1. transformation

-4 1

-5 3

105 -1⎤  3⎦

2. translation 3. A(-3, -2), B(4, -1), and C(0, -4) Lesson Practice 105 ⎡ 17 -37⎤ a. ⎢  16⎦ ⎣-7 b. image matrix: ⎡-2 -6 -4⎤ ⎢  ⎣ 1 1 5⎦ 8

F'

y F

4 E' -8 -4 D'

E x 8

D 4

-4 -8

c. image matrix: ⎡4 -1 -3⎤ ⎢  4 1⎦ ⎣2 y

N'

O M'

2

N x

O' -4

-2

2

4

-2 -4

M

© 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.

LSN 105–1

Saxon Geometry

Lesson Practice 105 ⎡ 38 8⎤ 1. ⎢  ⎣-1 14⎦

105

12. 1139 cubic meters 13.

2. 〈-4, 1〉 3. AB = 3.2, AC = 6.1, BC = 6.4, m∠A = 80º, m∠B = 70º, m∠C = 30º

14. A

4. 50 centimeters

15. a translation of 1.5 units left and 2 units up

5. If the design is to be _ symmetrical, then AB _ and AC must be congruent, which must and AC means AB also be congruent to each other. 2

2

6. (x + 2) + (y - 3) = 25

16. rectangular prism 17. If 0 < k < 1, the dilation is a reduction and for k > 1, the dilation is an enlargement. 1⎤  -1⎦

⎡5 4 18. ⎢ ⎣ 1 -3

7. 1634 in.3

4

Y

y X' x

Z

8. B

-2 X

9. (2, 0)

4 -2 -4

Z' Y'

 2 √2 m3 10. V = _ 3

11. K' J

4

19. 12.25

y L' x

O

2

J' K

-4

L

© 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.

20. “A bus is a downtown bus or it is green”; true 21. 22° LSN 105–2

Saxon Geometry

Lesson

105

22. 1440° 23. 126°, 27°, and 27° 24.

4 T

U V

W -4 U' T'

y

V'

x 2

4

W'

25. The larger triangle has four times the area of the smaller. 26. C 27. They both have a magnitude of 5. 28.

29. 2311 cm3 30. 8 in.

© 2009 Saxon®, an imprint of HMH Supplemental Publishers Inc. All rights reserved.

LSN 105–3

Saxon Geometry