Busy. Please wait.
Log in with Clever

show password
Forgot Password?

Don't have an account?  Sign up 
Sign up using Clever

Username is available taken
show password

Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't Know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Geometry finals

studing for the geometry finals

reflections x-axis (x,y)->(x,-y) [1,0 0,-1]
reflections y-axis (x,y)->(-x,y) [-1,0 0,1]
reflections y=x (x,y)->(y,x) [0,1 1,0]
reflections y=-x (x,y)->(-y,-x) [0,-1 -1,0]
Rotations (about origin) 90 CW (x,y)->(y,-x) [0,1 -1,0]
Rotations (about origin) 270 CC (x,y)->(y,-x) [0,-1 -1,0]
Rotations (about origin) 180 CW or CC (same) (x,y)->(-x,-y) [-1,0 0,-1]
Rotations (about the origin) 270 CW (x,y)->(-y,x)[0,-1 1,0]
Rotations (about the origin) 90 CC (x,y)->(-y,x) [0,-1 1,0]
sum of interior angles of a regular polygon (n-2)180
Each interior angle of a reg polygon (n-2)/n(180)
sum of the exterior angles 360
each exterior angles of a regular polygon 360/n
Pythagorean Theorem a^2+b^2=c^2
Pythagorean Theorem:acute a^2+b^2>c^2
Pythagorean Theorem:obtuse a^2+b^2
Area of a square s^2
Area of a rectangle lw
Area of a triangle (1/2)bh
Area of a Rhombus (1/2)(d1+d2)
Area of a Trapezoid (1/2)h(b1+b2)
area of a regular polygon (1/2)ap
Area of a Circle (pi)r^2
circumference of a circle (pi)d
Arc Length of a circle 2(pi)r(x/360)
Area of a sector in a circle (x/360)(pi)r^2
Standard Form of the Equations of a circle (x-h)^2+(y-k)^2=r^2
Surface (total) area of a Sphere 4(pi)r^2
Volume of a Sphere (4/3)(pi)r^3
Sine SOH
cosine CAH
Tangent TOA
Converse If Q, then P
Inverse If not P,then not Q
Contrapositive If not Q,then not P
Biconditional P,if and only if,Q
Statement If P,then Q
Signs:Inverse ~P-~Q
Signs:Converse Q-P
signs:Biconditional P<->Q
signs:Contrapositive ~Q-~P
Alternate angles are congruent
Consecutive angles are supplementary
corresponding angles are congruent
exterior angles are congruent
sum of complementary angles are 90 degrees
sum of supplementary angles are 180 degrees
ways triangles are congruent SSS,SAS,ASA,AAS,HL
ways triangles are similiar SSS,ASA,AA
Measure of a central angle measure of intercepted arc
measure of inscribed angled (1/2)measure of intercepted arc
measure of angled formed by 2 chords inside a circle (1/2)sum of intercepted arcs
measure of angles formed secants and/or tangents outside a circle (1/2)difference of intercepted arc
ratio of the perimeters x:4
ratio of the areas x^2:y^2
ratio of the volumes x^3:y^3
distance formula (sq.rtof:(x2-x1)^2+(y2-y1)^2)
slopes of parallel lines same
slopes of perpendicular lines recipricals
slope intercept form y=mx+b
point slope form y-y1=m(x-x1)
Created by: 1422592946
Popular Miscellaneous sets




Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
restart all cards