1. If * = 30 degrees What is #:
2. What is ?:
3. What is $:
4. If # = 95 degrees What is *:
5. What is $:
6. What is ?:
7. If * = 43 degrees What is #:
8. What is ?:
INTERSECTING LINES AND
ANGLE RELATIONS
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The two horizontal line segments are parallel to
each other and perpendicular to the vertical line
segment. For this illustration the # angle should
not be less than 90 degrees and the * angle should
not be greater than 90 degrees although most of
the relations will still be true even if they are.
For example * + # is still equal to 180 degrees no
matter if * is greater or lesser than 90. Same for
? + $.
Pay real close attention to this lesson.
These angles are very important because the angle
you may need is not the angle that the engineer
may have given you on the blueprint.
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