End Of Course Geometry Practice Test With Answers - North Thurston Public Schools Page 3
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30ΔDEF has vertices D(4, 1), E(2, –1), and F(–2, –1). Classify ΔDEF based on its sides.
5.
equilateral
0 A.
Work---see addendum
isosceles
0 B.
at end of answer key!
scalene
0 C.
right
0 D.
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Determine the equation of a line through the point (3, –4) that is perpendicular to the line y = 3x + 7.
6.
0 A. y = 3x – 13
Perpendicular to y=3x + 7 means the slope of my line will be
0 B. y = –3x + 5
the opposite reciprocal of 3, which is
1
x – 3
0 C. y =
3
1
So….the equation is:
x – 5
0 D. y =
3
(Related Tutorial Videos:
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1,
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2)
Day 3
Joe and Sara were standing on a pier sailing a toy sail boat. The boat was 6 feet from the base of the pier
7.
and the pier was 4 feet above the water.
6 ft
O
A
Ɵ
4 ft
4ft
T
B
Determine the angle of depression from the pier to the toy sail boat.
Show your work using words, numbers and/or diagrams.
What is the angle of depression from the pier to the sail boat?______33.7°________degrees
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