studing for the geometry finals
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| reflections x-axis | (x,y)->(x,-y) [1,0 0,-1]
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| reflections y-axis | (x,y)->(-x,y) [-1,0 0,1]
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| reflections y=x | (x,y)->(y,x) [0,1 1,0]
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| reflections y=-x | (x,y)->(-y,-x) [0,-1 -1,0]
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| Rotations (about origin) 90 CW | (x,y)->(y,-x) [0,1 -1,0]
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| Rotations (about origin) 270 CC | (x,y)->(y,-x) [0,-1 -1,0]
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| Rotations (about origin) 180 CW or CC (same) | (x,y)->(-x,-y) [-1,0 0,-1]
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| Rotations (about the origin) 270 CW | (x,y)->(-y,x)[0,-1 1,0]
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| Rotations (about the origin) 90 CC | (x,y)->(-y,x) [0,-1 1,0]
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| sum of interior angles of a regular polygon | (n-2)180
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| Each interior angle of a reg polygon | (n-2)/n(180)
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| sum of the exterior angles | 360
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| each exterior angles of a regular polygon | 360/n
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| Pythagorean Theorem | a^2+b^2=c^2
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| Pythagorean Theorem:acute | a^2+b^2>c^2
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| Pythagorean Theorem:obtuse | a^2+b^2
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| Area of a square | s^2
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| Area of a rectangle | lw
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| Area of a triangle | (1/2)bh
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| Area of a Rhombus | (1/2)(d1+d2)
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| Area of a Trapezoid | (1/2)h(b1+b2)
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| area of a regular polygon | (1/2)ap
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| Area of a Circle | (pi)r^2
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| circumference of a circle | (pi)d
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| Arc Length of a circle | 2(pi)r(x/360)
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| Area of a sector in a circle | (x/360)(pi)r^2
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| Standard Form of the Equations of a circle | (x-h)^2+(y-k)^2=r^2
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| Surface (total) area of a Sphere | 4(pi)r^2
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| Volume of a Sphere | (4/3)(pi)r^3
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| Sine | SOH
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| cosine | CAH
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| Tangent | TOA
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| Converse | If Q, then P
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| Inverse | If not P,then not Q
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| Contrapositive | If not Q,then not P
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| Biconditional | P,if and only if,Q
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| Statement | If P,then Q
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| Signs:Inverse | ~P-~Q
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| Signs:Converse | Q-P
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| signs:Biconditional | P<->Q
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| signs:Contrapositive | ~Q-~P
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| Alternate angles are | congruent
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| Consecutive angles are | supplementary
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| corresponding angles are | congruent
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| exterior angles are | congruent
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| sum of complementary angles are | 90 degrees
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| sum of supplementary angles are | 180 degrees
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| ways triangles are congruent | SSS,SAS,ASA,AAS,HL
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| ways triangles are similiar | SSS,ASA,AA
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| Measure of a central angle | measure of intercepted arc
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| measure of inscribed angled | (1/2)measure of intercepted arc
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| measure of angled formed by 2 chords inside a circle | (1/2)sum of intercepted arcs
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| measure of angles formed secants and/or tangents outside a circle | (1/2)difference of intercepted arc
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| ratio of the perimeters | x:4
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| ratio of the areas | x^2:y^2
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| ratio of the volumes | x^3:y^3
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| distance formula | (sq.rtof:(x2-x1)^2+(y2-y1)^2)
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| slopes of parallel lines | same
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| slopes of perpendicular lines | recipricals
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| slope intercept form | y=mx+b
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| point slope form | y-y1=m(x-x1)
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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