How to prove similar triangles<br>Define the angle-angle (aa) theorem. Two triangles can be proved similar by the angle-angle theorem which states: if two triangles have two congruent angles, then those triangles are similar. [substeps] This theorem is also called the angle-angle-angle (aaa) theorem because if two angles of the triangle are congruent, the third angle must also be congruent.
triangles have 3 angles
A: Yes

FRANKFURT, Oct 2 (Reuters) - Allianz extended the contract of Chief Executive Michael Diekmann by less than expected on Thursday, saying it would appoint Oliver Baete as the new chief of Europe's largest insurer from May 7 next year. Diekmann's current contract was due to expire in December, when he will also have turned 60, the traditional retirement age for top executives at the insurer but investors widely expected him to stay in his role for a further one to two years.
Allianz on thursday extended the contract of Chief Executive Michael Diekmann by less than expected
A: Yes

How to clean eyeglasses<br>Wash your hands before cleaning your glasses. Wash up for 20 seconds with lotion-free soap and warm water. You'll need to make sure your hands are free of dirt, grease, and grime before cleaning your glasses.
This process is the same for all eyeglasses.
A:
It's impossible to say