Unit 3 Test Review Flashcards
Figures with the same size and shape are __
congruent
What is a rigid motion called sometimes?
congruence transformation
The order of corresponding parts ___
matters
Isosceles triangle
Two sides are equal
Isosceles triangle theorem
Two sides of a triangle are congruent -»angles opposite of those sides are also congruent
Converse of Iso. tri. theo.
Two angles are congruent -» sides opposite of those angles are also congruent
Two congruent angles at the bottom of an iso. triangle are __
base angles
Third angle of an isosceles
Vertex angles
If a line/line segment bisects a vertex angle…
then it is also the perpendicular bisector of the opposite side
An equilateral triangle is __
equiangular (equal angles) and vice versa
CPCTC (Corresponding Parts of congruent triangles)
If two triangles are congruent then all the sides and all the angles are congruent too.
Side Side Side
All three sides are congruent on both triangles meaning the triangles are congruent
Side Angle Side
Two sides and an angle in between are the same on another triangle then the triangles are congruent
Included angle
Angle between two sides of a triangle. Formed by the two adjacent sides of a polygon
If triangles share a side
The side counts for both triangles
If triangles share a side
The side counts for both triangles
Angle side angle
Two angles and side in between are congruent for both triangles then the triangles themselves are congruent.
Angle angle side
Two angles and a nonincluded side are congruent for both triangles, the triangles are congruent.
What should I know about ASA’s and AAS
As long as there are two angles and 1 congruent side then the triangles are congruent
HL
If the hypotenuse (side opposite of box thing for right angles) and one leg is congruent to the hypotenuse and leg of another triangle then the triangles are congruent
Overlapping triangls
Share angles/lines
