Which one of the following does NOT prove congruency in right triangles?
Select one:
a. HL
b. AA
c. HA
d. LL

Question

Which one of the following does NOT prove congruency in right triangles?
Select one:
a. HL
b. AA
c. HA
d. LL

miracrown · Answer

What do you think?

miracrown · Answer

For congruency, we need at least 1 length.
Angle angle can only be used to show that triangles are similar not congruent.

jim_thompson5910 · Answer

HL = Hypotenuse Leg
AA = Angle Angle
HA = Hypotenuse Altitude
LL = Leg Leg


It's a bit confusing how the "A" for AA stands for Angle while the "A" in HA stands for Altitude.

miracrown · Answer

I agree, it can get confusing sometimes.

anonymous · Answer

D? @Miracrown

jim_thompson5910 · Answer

oh apparently, according to this page, http://www.wyzant.com/resources/lessons/math/geometry/triangles/right_triangle_congruence the A in HA stands for Acute (or Acute Angle). Read that link and you'll be able to eliminate the non-answers to get the final answer.