Circle Vocab
(What is) The radius
The radius is a straight line from the center to the circumference of a circle or sphere.
(What is) Right Triangle
A right triangle is a triangle that forms one right angle.
(What is) The code word used to remember trig functions?
SohCahToa.
(What is) The diameter
The diameter is a straight line passing from side to side through the center of a circle or sphere.
The 30-60-90 triangle's 3 measurements are: n, n√3, 2n.
(What is) The chord
The chord is a line segment that connects two points on the circumference of a circle.
(What is) The hypotenuse
The hypotenuse is the longest leg of a right triangle, and is across from the right angle.
(What is) The tangent
The tangent is the line on the outside of a circle or sphere that touches its circumference at one point.
(What is) The formula for the area of a triangle?
The formula for the area of the triangle is 1/2bh.
(What is) The secant
The secant is a straight line that intersects the circumference of a circle at two points.
(What are) The 3 measurements for a 45-45-90 triangle?
The 3 measurements for 45-45-90 triangle are: n,n, n√2.