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24 Cards in this Set
- Front
- Back
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What is a convex polygon?
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All angles are less than 180 deg.
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What is a concave polygon?
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At least one angle is greater than 180 deg.
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What is a diagonal?
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Any segment that connects two non-adjacent (next to) verticies of the polygon
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Name all the transformations?
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- Rotation
- Reflection - Translation move up, down, right, left -Dialation -reduction or enlargement |
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y=x+4 How will it look
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I will move up four spaces
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y=3x squared...How will it look?
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A reduction by 1/3
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Stae what each thing means
y=1/2 xto the 3rd + 4 |
1/2 dilation enlargement by 2
4 means up 4 |
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ISOMETRY
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No change in the figure
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Vectors
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Tells you the direction and distance and the symbol is
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coordinate rules for reflection
x axis |
a, b to a, -b
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coordinate rules for reflection
y axis |
a, b to -a, b
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coordinate rules for reflection
y=x |
a,b to b,a
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coordinate rules for reflection
y=-x |
a,b to b,-a
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90 degrees
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a.b to -b,a
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180 degrees
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a,b to -a,-b
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270 degrees
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a,b to b,-a
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Dialate
D(x,y)= |
ratio or scale factor
D1(nx,ny) |
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n=scale
n>1= n=1= 0<n<1 |
enlargement
stays the same reduction or contraction |
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How do you find the number of diagonals from 1 vertex
n= mumber of diagonals |
n-3
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How do you find the number of triangle formed?
n= mumber of diagonals |
n-2
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How do you find the sum of the interior angles?
n= mumber of diagonals |
(n-2) x 180
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How do you find the measure of each interior angle?
n= mumber of diagonals |
180(n-2)
-------- n |
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THe rule to find the total number of diagonals in any given n-gon.
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n x n-3
-------- 2 |
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What is the sum of each exterior angle?
What is the equation n is the number of sides |
It is always 360
360/n |
