New In our Forum
how do i find a missing angle measures? by yungg_jayy
Re: equation by boguy72
Math Video Game! Play Fraction Balls!

A+    A−    B  
Home Page
Algebra
Games
Geometry
Interactive
Trigonometry
Forum
Math Jobs




AddThis Social Bookmark Button

Angle Side Side Postulate (ASS)

Same as the Side Side Angle Postulate (SSA)

There is NO SUCH THING!!!! The ASS Postulate does not exist because an angle and two sides does not guarentee that two triangles are congruent.
If two triangles have two congruent sides and a congruent non included angle, then triangles are NOT NECESSARILLY congruent. This is why there is no Side Side Angle (SSA) and there is no Angle Side Side (ASS) postulate. The way that many people remember this fact is that the ASS postulate would be the name for a donkey! (ASS) And there is no postulate named after a donkey!

However, if you would like a picture to illustrate why there is no ASS or SSA postulate look at the two triangles below.
As you can see, eventhough side BC = BD , this side length is able to swivel such that two non congruent triangles are created even though they have two congruent sides and a congruent, non included angle. (SSA)
ABC ABD
The two triangles are NOT congruent

Top
Welcome Guest
Please Log in or register
Who's online: 6 Guests, 0 Users :        Please welcome mathprof, our newest member.
AddThis Social Bookmark Button Page copy protected against web site content infringement by Copyscape