Basic Vocabularies
Set of points which have infinite length
Line
Angle whose measure is between 0 and 90
Acute angle
Exterior angles that are on opposites side of the transversal
Alternate exterior angles
Movement in all points of a figure in the same direction and the same distance
Transformation
triangle with all sides congruent.
Equilateral triangle
Points that are on the same line.
Collinear
Angle whose measure is 90 degrees.
Right angle
Interior angles that are on the same side of the transversal
Alternate interior angles
When a geometric figure is reflected across a line
Reflection
triangles with corresponding congruent parts
Congruent Triangles
Part of a line that consists of two points called endpoints
Segment
Angles that add up to 180 degrees
Supplementary Angles
Angles that are exterior and on the same side of the transversal
Same side interior angles
The original image
Preimage
A statement that tells us that 2 triangles are congruent
Congruence statement
Segments that have the same length.
Congruent segment
two angles whose sum is 90 degrees.
complementary angles
Angles that are formed by two intersecting lines
Vertical angles
The shifting of an image in the same direction that same distance
Translation
Theorems that can not be used to prove that 2 triangles are congruent
SSA and AAA
Divides a segment into two congruent parts
Bisector
Two angles with a common vertex and a common side between them
Adjacent Angles
Angles that have that same position
Corresponding Angles
A transformation that maintain same shape but changes the size
Dilation
Can only be used when proving that 2 right triangles are congruent
HL