CP Vocabulary
True or False: A triangle has 2 vertices.
false
True or false: A centroiod is never inside the triangle.
What is false ?
The incenter of a triangle is ________ from the _______ of a triangle.
equidistant; sides
This is a comparison of a number a to a nonzero number b using division.
Ratio
These are the only three shortcuts that can be used to prove that triangles are similar.
AA, SSS, SAS
The _____ of a triangle is the perpendicular from the base.
altitude
The centroid is also called ______.
Center of gravity
The circumcenter is equidistant to the ______ of the triangle.
Scale Factor
For two triangles to be similar using SSS all the corresponding sides must _________________.
Have the same ratio or be proportional
The three medians intersect at a single point, called _____.
the centroid of a triangle
The Orthocenter is the point of concurrency for the ______ _______ of a triangle.
3 altitudes
In some situations, the circumcenter is located on the ________.
Hypotenuse
This is an equation that states that two ratios are equal.
Proportion
This is the only type of transformation that will contain numbers in the coordinate notation
A translation
A perpendicular bisector is a line that cuts a triangle's _____ into _____ equal parts at _____ degrees.
side; two; 90
What is the ratio the centroid divides each median into?
The circumcenter, the centroid, the orthocenter, and the incenter are all in this triangle
Equilateral
This type of transformation uses the coordinate notation:
(x,y)-->(-x,-y)
Rotation 180 degrees about the origin
<< DOUBLE JEOPARDY >>>
Solve for x in this proportion:
12/(5x-3) = 6/11
5
Three or more lines that have a point in common are __________.
Concurrent
Calculate the Centroid of this Triangle:
A (-5, -3); B (3, -5); C (-1, 2)
(-1,-2)
The circumcenter is _______ an acute triangle, ______ an obtuse triangle, and ______ a right triangle.
inside, outside, on
DOUBLE JEOPARDY >>
Find the Orthocenter of this triangle:
P(0,-4); D(-4,4); Q(8,4)
(0,0)
This type of transformation uses the coordinate notation:
(x,y)-->(x+h,y+k)-->(y,x)
Glide Reflection