Definitions
Formulas
Trigonometry
Circles
Triangles
100
IN A PLANE, TWO LINES ARE __________ IF AND ONLY IF THEIR SLOPES ARE EQUAL OR BOTH UNDEFINED.
PARALLEL
100
Pythagorean Theorem
a2+b2=c2
100
Ratio of sin
opposite/hypotenuse
100
All the way around a circle is called the _______________.
Circumference
100
You can only use Pythagorean Theorem with what kind of triangles?
Right Triangles
200
TWO ANGLES THAT ADD UP TO 180 DEGREES
SUPPLEMENTARY ANGLES
200
Midpoint
(x1+x2)/2 , (y1+y2)/2
200
Ratio of cos
adjacent/hypotenuse
200
A circle is _____ degrees
360
200
A triangle adds up to ______ degrees
180
300
THE LENGTH OF THE LINE FROM THE CENTER TO ANY POINT ON ITS EDGE
RADIUS
300
Arc Length Formula
m/360*pi*2*r
300
Ratio of tan
opposite/adjacent
300
A tangent line and radius form a __________ where they meet
right angle
300
A triangle with 2 congruent sides is called a(n) ________________ triangle.
Isosceles
400
THE LONGEST SIDE OF A RIGHT TRIANGLE. ALWAYS ACROSS FROM THE RIGHT ANGLE
HYPOTENUSE
400
Area of a Sector
m/360*pi*r2
400
Cos(x)=Sin______
90-x
400
What is the center of the circle with the equation:
(x-3)2 + (y+7)2 = 81
(3,-7)
400
A triangle with 3 congruent sides is called a(n) _________________ triangle.
Equilateral
500
THE SET (OR LOCUS) OF ALL COPLANAR POINTS THAT ARE THE SAME DISTANCE FROM A FIXED POINT CALLED THE CENTER.
CIRCLE
500
Distance Formula
500
sin(72)/cos(18)=
1
500
What is the radius of the circle with the equation:
(x-2)2 + (y-5)2 = 25
5
500
A triangle with no congruent sides is called a(n) _________________ triangle.
Scalene