Basic Constructions

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Basic Constructions
GEOMETRY LESSON 1-7
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Basic Constructions
GEOMETRY LESSON 1-7
Solutions
1-6. Answers may vary. Samples given
1. The figure is a segment whose endpoints are C
and D. 2. The figure is a ray whose endpoint is
G. 3. The figure is a line passing through
points A and B. 4. 5. The figure is an angle
whose measure is between 0 and 90. 6. The
figure is two segments in a plane whose
corresponding lines are parallel.
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Basic Constructions
GEOMETRY LESSON 1-7
7. Since C is a midpoint, CD CE also, CD
CE 20 substituting results in CE CE 20,
or 2CE 20, so CE 10. 8. 9.
Solutions (continued)
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Construction vidoes

• http//teachers.henrico.k12.va.us/math/igo/01Funda
  mentals/1_6.html

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Basic Constructions
GEOMETRY LESSON 1-7
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Basic Constructions
GEOMETRY LESSON 1-7
Construct Y so that Y G.
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Basic Constructions
GEOMETRY LESSON 1-7
Quick Check
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Basic Constructions
GEOMETRY LESSON 1-7
Quick Check
1 2
Use a compass opening less than AB. Explain
why the construction of the perpendicular
bisector of AB shown in the text is not possible.
Without two points of intersection, no line can
be drawn, so the perpendicular bisector cannot be
drawn.
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Basic Constructions
GEOMETRY LESSON 1-7
Quick Check
3x 48 Subtract 4x from each side.
x 16 Divide each side by 3.
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Basic Constructions
GEOMETRY LESSON 1-7
(continued)
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Basic Constructions
GEOMETRY LESSON 1-7
For problems 1-4, check students work.
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