Lines and Angles
Part of a line with two endpoints.
Line Segment
The perimeter of a circle.
Circumference
The solution to the equation:
2(x+3)=14
x=4
The solutions to the equation:
x^2+7x+10=0
x=-5,-2
Part of a line with one endpoint.
Ray
The distance between the center of a circle and its circumference.
Radius
The solution to the equation:
-7x+11=8x-19
x=2
The solution to the equation:
x^2+6x+9=0
x=-3
A point that divides a line segment into two equal parts.
Midpoint
Two angles whose measures sum to 180 degrees.
Supplementary angles
The slope of the equation:
y=1/5x-11
1/5
The solutions to the equation:
x^2+10x+4=2x-8
x=-6,-2
An angle that is less than 90 degrees.
Acute
The name for a quadrilateral with four right angles.
Rectangle
The slope of the equation:
2x+9y=15
-2/9
The solutions to the equation:
x^2+9x=9x-16
x=4,-4
The Pythagorean Theorem
a^2+b^2=c^2
The name for a triangle with two congruent sides.
Isosceles
The y-intercept of the equation:
5x-4y=20
(0,-5)
The solutions to the equation:
x^2+8x=0
x=0,-8