Question

I need help studying for an oral exam , these are the topics she will be testing me on .


Transformations
Angle Measures
Naming Polygons
Symmetry
Rotational Symmetry


I need help on explaining rotational symmetry and angle measures . Thanks

Answer 1

If interested, Come on g-mail.

Answer 2

well symetry is easy it wether you can cut a figure evenly and all the peices look alike

Answer 3

rotationl symmetry is a bit harder

Answer 4

it is how many times the figure look the same after rotating it 45 degrees

Answer 5

u r in which class/std?

Answer 6

transformations is easy too

Answer 7

there are translations, reflections, dilation, and rotations

Answer 8

translations are simply moving the shape

Answer 9

reflections are the flipped figure of the original over a line

Answer 10

correct

Answer 11

dilations are changing the size, making it larger or smaller

Answer 12

just wait.

Answer 13

and rotations are rotated figures of the original

Answer 14

all these have formulas for certain transformations

Answer 15

angle measures, thats like sine cosine tangent, cosecant and sencant, and cotangents

Answer 16

as well as the special triangles

Answer 17

as well as the special triangles

Answer 18

as for naming polygons, polygons are classifying by the number sides they have.

Answer 19

for example pentagon hexagon heptagon octagon nonagon

Answer 20

of course triangle and square before pentagon

Answer 21

anything else in specific?

Answer 22

No thats it that is what she will be asking me on .

Answer 23

okay well good luck :)

Answer 24

Translations-
Up-Down
f(x)=x2
• f’(x)= f(x)+C=x2+C [UP]
• f’(x)= f(x)-C=x2-C [DOWN]

Graph for x2 + 3 looks like this:
To move a function up, you add outside the function: f(x)+C is f(x) moved up C units.
Moving the function down works the same way; f(x)-C is f(x) moved down C units.

Left-Right
f(x)=x2
• f’(x)= f(x+C)=(x+C)2 [LEFT]
• f’(x)= f(x-C)=(x-C)2 [RIGHT]

Graph for (x + 3)2 looks like this:
To shift a function left, add inside the function's argument: f(x + C) gives f(x) shifted C units to the left.
Shifting to the right works the same way; f(x – C) is f(x) shifted C units to the right.

Reflections:-
Up-Down
f(x)=x2
• f’(x)= -f(x)=-(x)2 [X-AXIS MIRROR REFLECTION]

Graph for –x2 looks like this:
-f(x) is the x-axis mirror image of f(x).


Left-Right
f(x)=x3

• f’(x)= f(-x)=(-x)3 [Y-AXIS MIRROR REFLECTION]




Graph for –x3 looks like this:
f(–x) is the y-axis mirror image of f(x).


Functions with symmetry graph.
Even Function-
• f is even function if f(-x)=f(x)
• Even functions are symmetry about y-axis.
• Cosine is an even function.

Odd Function-
• f is odd function if f(-x)=-f(x)
• Odd functions always pass through origin.
• Odd functions graph remains unchanged after rotation of 1800 about the origin.
• Sine is an odd function.