jeopardy powerpoint (math 20: angles and polygons)
DESCRIPTION
A powerpoint created as a Math 20 review of the Polygon and Angles Unit.TRANSCRIPT
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Round 1Final
Jeopardy
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Copying Angles
Similar
Polygons
Definitions ProofsSurface
Area/
Volume
Potpourri
$100 $100 $100 $100 $100 $100
$200 $200 $200 $200 $200 $200
$300 $300 $300 $300 $300 $300
$400 $400 $400 $400 $400 $400
$500 $500 $500 $500 $500 $500
Math 20: Angles and Polygon Review
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$100
How do you copy one side length of a triangle?
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$100
Scores
Draw a straight line longer than the length you will copy. Label a point on the line that will be one endpoint. Extend your compass to the desired length to be copied and transfer that to the endpoint created.
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$200
How can you create a line perpendicular to
another?
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$200
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A B
Extend your compass past the midpoint of the line AB. From one endpoint, do
not change the compass length, draw an arc above the line. From the other
endpoint draw an arc on top of the line. Where the two lines intersect use a
straight edge to connect that point to the line AB.
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$300
How would you copy the given angle?
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$300
Scores
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$400
How would you bisect this given angle?
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$400
Scores
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$500
Explain how to copy a given triangle. *Come up to the board if you wish.
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$500
Scores
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$100
These are the two characteristics that all similar objects have.
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$100
What are equal angles and proportional sides?
Scores
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$200
This is why the following two equilateral triangles are
equal.
8cm3cm
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Scores
$200
All equilateral triangles are similar because they have
equal angles and proportional sides.
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$300
This is the reason we know the following two squares
are similar.
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$300
Scores
All squares are similar.
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$400
If the two objects are similar this is the length of
the shadow produced by the second tree.
10 cm
16 cm
5 cm
?
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$400
What is 6 m?
Scores
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$500
15cm
10 cm
9 cm 7 cm
12 cm12 cm
8 cm8 cm
Are the following polygons similar?
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$500
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Nope, they sure aren't.
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These are the properties of a
bisector.
$100
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Scores
$100
A line or plane that cuts an angle, line, or plane in half.
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$200
These are the properties of a right triangle.
Scores
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$300
Explain vertically opposite angles.
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$300
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1
1
< 1 = < 1
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$400
Explain the hypotenuse leg postulate.
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$400
Scores
In a set of right angle triangles if we know the
hypotenuses and one set of the legs are congruent then the triangles are congruent
as well.
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$500
What relationships exist between scale factor, surface area, and volume?
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Scale factor: a:b
Surface Area:a2:b2
Volume: a3:b3
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$100
These are the headings of the columns in a two
column deductive proof?
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$100
Scores
What is a statement and a
proof?
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$200
In a two column deductive proof we always state these
first.
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$200
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What is the given?
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When provided with diagrams and information we should not only put the given in our two column deductive proof but we should also put it here.
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$300
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What is the mark the diagram?
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$400
This postulate can be used to prove these two triangles are congruent.
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$400
Scores
What is the hypotenuse leg
postulate?
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$500
1 1
2 2
This postulate can be used to prove these two triangles are
similar. Explain how it satisfies that postulate.
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$500
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What is AAS? We can tell this because
<1=<1, <2=<2, and the reflexive property.
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$100
This is the definition of a scale factor.
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$100
Scores
What is the ratio of the lengths of corresponding sides of two polygons?
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$200
This is the ratio of surface areas between the two
cubes.
5 2
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$200
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What is 25:4?
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$300
These are the surface areas if the volumes
of two substances are 1000 and 64.
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$300
What is 100 and 16?
Scores
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$400
If the scale factor of two objects is 1:4 this is what the ratio 1: 64 represents.
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$400
What is volume?
Scores
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$500
In two solids with corresponding volumes of 125:27 this is the surface area ratio and the scale factor of the two solids.
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Scores
$500
What is 25:9 and 5:3?
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$100
This postulate states that if two sets of angles in two
triangles are the same then the triangles will be similar
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$100
What is the AA Similarity Theorem?
Scores
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$200
This is the difference that exists between the angles of a 3 sided to a 4 sided
polygon.
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Scores
$200
What is 180° to 360°?
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$300
Can these two triangles be proven congruent?
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$300
No, although we have a reflexive side a
common angle and another side they must
be corresponding sides.
Scores
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$400
10 cm
12 cm
4 cm
This is the length of the large triangle.
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Scores
$400
What is 30 cm?(10)(12)
4
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$500
C
A
DE
B
This is how we know <D = <C.
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$500
Scores
What is alternate interior angles are
congruent?
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Scores
Polygon Proofs
Final Jeopary Question
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Given: IK is perpendicular to HJ∆ HIJ is isosceles
Prove: HK = KJ
I
J
K
H
H
As a team complete the following two column
deductive proof.
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Scores
• StatementsStatements1. 1. ∆∆ HIJ is isosceles HIJ is isosceles
2. IK=HJ2. IK=HJ
3.<HKI is right3.<HKI is right
4. <JKI is right4. <JKI is right
5. <HKI = <JKI5. <HKI = <JKI
6. KI=KI6. KI=KI
7. HI=JI7. HI=JI
8. ∆8. ∆HKI = HKI = ∆∆JKIJKI
9. HK = KJ9. HK = KJ
• ProofProof1. Given1. Given
2. Given2. Given
3. Def'n of perpendicular3. Def'n of perpendicular
4. Def'n of perpendicular4. Def'n of perpendicular
5. 5. Right angles are Right angles are congruentcongruent
6. Reflexive property6. Reflexive property
7. Def'n of isosceles 7. Def'n of isosceles ∆∆
8. HL8. HL
9. CPCTC9. CPCTC