GEO #2 Congruence

Front

How do you determine the triangle congruence theorem to prove the triangles are congruent?

Back

Match the parts of the triangle. Label them as angles or sides. (order matters!)

Front

What is the ambiguous case?

Back

Not Necessarily Congruent: you cannot prove that having 2 sides and a non-included angle can be used to prove the rest of the parts are also congruent.

The 3rd side length in each triangle could be bigger or smaller.

Front

What are the five ways to prove triangles congruent?

Back

SSS (side-side-side)

ASA (angle-side-angle)

AAS (angle-angle-side)

SAS (side-angle-side)

order matters!

HL (hypotenuse-leg)

Front

How do you complete the congruence statement?

Back

Match each letter by its markings or measurement.

Front

corresponding

Back

matches to another in a 2nd figure

Front

auxiliary line

Back

a line drawn to "cut" a figure or show dimension

Front

parallelogram

Back

4-sided shape where both pairs of opposite sides are parallel and congruent

Front

parallel

Back

same slope, never cross or intersect

Front

perpendicular bisector

Back

creates right angles at the intersection point and cuts the line in half

Front

angle bisector

Back

a line that divides an angle in half