For help, go to Lesson 15.

1
GEOMETRY LESSON 3-7
(For help, go to Lesson 1-5.)
1. a segment 2. an obtuse angle 3. an acute
angle 4. a segment 5. an acute angle 6. an
obtuse angle
Use a straightedge to draw each figure. Then use
a straightedge and compass to construct a figure
congruent to it.
Use a straightedge to draw each figure. Then use
a straightedge and compass to bisect it.
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2
Constructing Parallel and Perpendicular Lines
GEOMETRY LESSON 3-7
Solutions
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3
GEOMETRY LESSON 3-7
Use the method learned for constructing congruent
angles.
Step 2 With the same compass setting, put the
compass point on point N. Draw an arc.
Step 4 Use a straightedge to draw line m through
the point you located and point N.
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4
GEOMETRY LESSON 3-7
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5
GEOMETRY LESSON 3-7
(continued)
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6
GEOMETRY LESSON 3-7
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7
GEOMETRY LESSON 3-7
Point R is the same distance from point E as it
is from point F because the arc was made with
one compass opening.
Point G is the same distance from point E as it
is from point F because both arcs were made with
the same compass opening.
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8
GEOMETRY LESSON 3-7
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9
Constructing Parallel and Perpendicular Lines
GEOMETRY LESSON 3-7
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10
Constructing Parallel and Perpendicular Lines
GEOMETRY LESSON 3-7
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11
Constructing Parallel and Perpendicular Lines
GEOMETRY LESSON 3-7
26. ab. Check students work. c. p m in
a plane, two lines to a third line are
. 2728. Answers may vary. Samples are
given. 27. The quad. is a rectangle.
25. ac. d. The sides of the smaller
are half the length of the sides of the
larger that they are to. e. Check
students work.
24. (continued) b. Answers may vary.
Sample c. One if the lengths for the 3
sides are given, only one is possible many
different quad. are possible because the
formed by the sides can vary.
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12
Constructing Parallel and Perpendicular Lines
GEOMETRY LESSON 3-7
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13
GEOMETRY LESSON 3-7
Draw a figure similar to the one given. Then
complete the construction.
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