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Unit 3 Review Flashcards | StudBud
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Unit 3 Review
Unit 3 Review
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30 cards
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Questions
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Answers
1
If we are dilating with K = 4, then A'B'=4(AB)
False
True
2
Determine if the triangle is obtuse, acute, or right.
obtuse
right
acute
not a triangle
3
These two triangles are similar by:
AAA
AA
ASA
SSS
4
Solve for x.
12
8.4
100.8
35
5
Use inverse trig to find the measure of ∠A.
73°
17°
72°
18°
6
Use inverse trig to find the measure of ∠ A.
34°
48°
42°
56°
7
What do dilations do?
change the size and shape of the pre-image
change the shape of the pre-image
slide the pre-image
change the size of the pre-image
8
The Pythagorean Theorem only works with a right triangle
True
False
9
Sin 30
o
= ____
Cos 60o
Tan 30o
Sin 60o
Cos 90o
10
Find the missing side lengths of the triangle AND find the missing angle measure.
Side lengths= 4,6 Angle measure=37°
Side lengths= 3,5 Angle Measure= 47º
Side lengths= 3,4 Angle measure=37°
Side lengths= 3,4 Angle measure=27°
11
What is the Formula of Sine?
Hypotenuse/Opposite
Opposite/Hypotenuse
Adjacent/Opposite
None of them
12
What is the Pythagorean Theorem?
a2+b2=c2
a+b=c
π
13
The diagonal of a tv screen is 37 in. The tv has a width of 32 in., find the height.
37 in
15 in
18.6 in
32 in
14
Dilations
C
D
A
B
15
Find the missing side.
30.3
72.3
2.9
8.5
16
What is the measure of side AC? Use your trigonometry ratios and round to the nearest tenth.
19.7
26.8
44.7
38.3
17
Find the PERIMETER of the Triangle
56 in
31 in
84 in
168 in
18
Which is the correct equation to solve for x?
None of these
152+212=x2
152 + x2=212
19
What is the scale factor?
4
2
3
Don't know just cry 😭😭😭😭😭😭
20
A ramp has a height of 5.8 ft. and makes an 80
o
angle with the height of the ramp. What is the length of the ramp?
5.7 ft
33.4 ft
5.9 ft
1.0 ft
21
What phrase to remember the trigonometry functions
SOH-CAH-TOA
SCT-OHO-HHA
SOH-CAH-TAO
SAH-COA-TOH
22
What is the scale factor
.5
no!!!!!!!!!!!!!!!!
5.7
1.5
23
Dilations preserve which properties?
Neither
Orientation only.
Congruence only.
Congruence and Orientation
24
After a dilation, the pre-image and image have the same perimeter
True
False
25
Use Pythagorean theorem to solve the problem!
4
13
17
11
26
Use Pythagorean Theorem to find the perimeter
67.5 cm
40.8 cm
46.2 cm
14.2 cm
27
Find the missing side using Pythagorean Theorem
4
164
18
6
28
Find the missing length. the triangle is similar if ΔEFD~ΔVFW
85
16
12
72
29
Similar Triangles...
have congruent angles
have congruent sidesd
have proportional sides
This is madness
30
Use the Pythagorean Inequalities to identify the triangle as acute, right, or obtuse.
right
acute
obtuse
