Things to know
When you see "o" in a transformation.
What is in the transformation, work from the right to the left?
(x, y) => (x, - y).
What is a reflection over the x-axis?
The sum of the two nonadjacent sides of a triangle.
What is an exterior angle?
A line segment that begins at a vertex of a triangle and goes to the midpoint of the opposite side.
What is a median?
When you have two triangles and two consecutive corresponding sides of a triangle congruent to two consecutive corresponding sides of a second triangle and the angles between these sides congruent.
What is triangle side, angle, side congruent theorem?
(x, y) => (-x, y).
What is a reflection over the y-axis?
The sum of the squares of the two shorter sides of a right triangle.
What is the Pythagorean theorem?
A line segment that begins at a vertex and is perpendicular to the opposite side.
What is an altitude?
360 degrees divided by the number of sides of the polygon.
What is either the measure of a central angle or an exterior angle?
(x, y) => (y, x).
What is a reflection over y = x?
A segment that is always parallel to and half the length of the third side .
What is the midsegment theorem?
V = (pi)(r^2)h.
What is the volume of a cylinder?
An angle that is bigger than 90 degrees and less than 180 degrees.
What is an obtuse angle?
In a right triangle when you know the adjacent side of an angle and the hypotenuse value.
What is the cosine of that angle?
(x, y) => (-y, x).
What is a 90 degree counterclockwise rotation?
The the point that is the sum of the x's divided by 2 followed by a comma and then the sum of the the y's divided by two.
What is the midpoint formula?
A line that passes through a circle at two points.
What is a secant?
An angle that measures 180 degrees.
What is a straight angle?
In a right triangle, if sin A = cos B, then A + B is equal to this.
What is 90 degrees?
(x, y) => (x + a, y + b).
What is a translation?
The composition of 2 reflections over two parallel lines is equivalent to this.
What is a translation?
A polygon that is equiangular and equilateral.
What is a regular polygon?
An angle that is more than 180 degrees and less than 360 degrees.
What is a reflex angle?