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Geometry Unit 8 Study Guide Flashcards | StudBud
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Geometry Unit 8 Study Guide
Geometry Unit 8 Study Guide
20 terms
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Includes right triangles, Pythagoreans Theorem, Law of Sines, Trigonometry, and some fun questions.
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Special right triangles can be solved using sin, cos, and tan.
True
False
2
If c
2
is greater than then a
2
+ b
2
it is an acute triangle.
True
False
3
In a right triangle, the hypotenuse is always...
Connected to the right angle
Longer than a + b
equal to a + b
The smallest side
4
Which one of the ratios is NOT part of the Trigonometry Functions?
Opposite / Adjacent
Hypotenuse / Opposite
Opposite / Hypotenuse
Adjacent / Hypotenuse
5
What does the law of sines do?
Finds the missing SIDE of a RIGHT triangle
Finds the missing ANGLE of a RIGHT triangle
Finds the missing SIDE OR ANGLE of ANY triangle
None of the above
6
A triangle has sides of lengths 5, 12, and 13. Is it a right triangle?
It's not a trianlge
Not enough information
Yes
No
7
What is the ratio for sin()?
Hypotenuse / Opposite
Opposite / Adjacent
Opposite / Hypotenuse
Adjacent / Hypotenuse
8
The inverse sin (written as sin
-1
) is used to find the angle measurements when give 2 sides of a right triangle.
False
True
9
The angles of a triangle add up to...
90 degrees
360 degrees
180 degrees
120 degrees
10
Sin, Cos, and Tan, can only be used on right triangles.
True
False
11
Given a 45, 45, 90 degree triangle, if the legs are both 12, what is the length of the hypotenuse?
24
\frac{12}{\sqrt{2}}
12\sqrt{2}
12\sqrt{3}
12
READ! A farmer has 17 sheep. All but 9 run away. How many are left?
9
8
17
0
13
How many sides does a triangle have?
4
2
3
1
14
Bonus: If it takes 5 painters 5 minutes to paint 5 houses, how long would it take 100 painters to paint 100 houses?
10 minutes
5 minutes
1 minute
100 minutes
15
Given the triangle below, what would cos(R) equal
30/34
34/30
16/34
34/16
16
What is the length of the hypotenuse of a right triangle with legs of lengths 6 and 8 units? (Remember a
2
+ b
2
= c
2
)
9
14
12
10
17
Think Hard: You're in a race and pass the person in 2
nd
place. What place are you in now?
3rd Place
4th Place
1st Place
2nd Place
18
A person looks down from a cliff and sees a boat. What kind of angle is this?
Angle of rotaion
Angle of depression
Angle of elevation
Supplement angle
19
If c
2
is less than then a
2
+ b
2
it is an acute triangle.
True
False
20
A person looks up from the ground to the top of a building. What kind of angle is this?
Angle of altitude
Angle of looking up
Angle of depression
Angle of elevation
