Geo_Book_Answers

Answers to Exercises
CHAPTER 3 REVIEW
1. False; a geometric construction uses a straightedge
and a compass.
2. False; a diagonal connects two non-consecutive
vertices.
3. true 4. true
5. false
6. False; the lines can’t be a given distance from a
segment because the segment has finite length and
the lines are infinite.
7. false
D
A B
8. true 9. true
10. False; the orthocenter does not always lie
inside the triangle.
11. A 12. B or K 13. I 14. H
15. G 16. D 17. J 18. C
19. 20.
21. 22.
23. Construct a 90° angle and bisect it twice.
24.
25. incenter
26. Dakota Davis should locate the circumcenter
of the triangular region formed by the three stones,
which is the location equidistant from the stones.
27.
B
A
B
A C
C
z
Copy
46 ANSWERS TO EXERCISES
C
28.
29.
30. mA mD.You must first find B.
mB 180° 2(mA).
B
2y
31.
32.
A
A B
I
y
R
1_
2 z
y
1_
2 z
y y x
Segment
5x
P R
3x 4x
x
2y
Q
B A
D F
T
D
33. rotational symmetry
34. neither 35. both
36. reflectional symmetry
37. D 38. A 39. C 40. B
41. False; an isosceles triangle has two congruent
sides.
D
4x
y