2007-01-07 09:08:48 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Because of scaling. Two triangles can have the same three angles but be of different sizes. When you know the length of one of the sides of the triangles you fix the size of each.
2007-01-07 09:15:25 · answer #1 · answered by Meresa 3 · 2⤊ 0⤋
ok! you are able to no longer practice triangles congruent by potential of employing the side-side-attitude when you consider that if i provide you a triangle with 2 facets(a and b) and an attitude opposite certainly one of them(A or B), there may be 3 circumstances: Case a million: if the size b is smaller than length h (the altitude), then a,b and A won't be able to type a triangle. subsequently if we've not got those triangle, there is no longer something to coach! Case 2: if the size b is comparable to h (the altitude), then they're going to type a best-triangle, so which you will practice them congruent. Case 3: if the size b is greater than h (the altitude), then there are 2 opportunities. the attitude C (the attitude shaped by potential of a and b) could properly be obtuse or acute. So we've not got adequate suggestions to end the degree of the attitude C, and subsequently we can't practice that the triangles are congruent.
2016-11-27 02:27:51 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Think about two triangles with sides 1-1-1 and 2-2-2, respectively. They satisfy AAA but are not congruent since they have different sizes.
2007-01-07 09:15:34 · answer #3 · answered by sahsjing 7 · 2⤊ 0⤋
two triangles are congruent if they have the same lengths of there sides and angles.
the angle angle angle postulate states ONLY the angles of the triangles but nothign about the sides.
if you have two 90 45 45 triangles but one has a hypot. of 45 feet and the other of 1 inch then there obviously not congruent...even if they have the same angles.
2007-01-07 09:11:57 · answer #4 · answered by ad_ice45 2 · 0⤊ 0⤋
AAA would prove that the angles are congruent but would not say anything about the lengths of each side.
2007-01-07 09:21:16 · answer #5 · answered by Anonymous · 0⤊ 0⤋
All you can say is that the two triangle are similar; that is they have the same shape. However they can vary greatly in size, and therefore cannot be congruent.
2007-01-07 09:24:29 · answer #6 · answered by ironduke8159 7 · 0⤊ 0⤋
because 2 triangles could have the same angles (i.e) 60, 60, and 60 and be a paper cu out but another with the same angles (60, 60, and 60) could be the roof of a house.
2007-01-07 09:12:06 · answer #7 · answered by Jordan 3 · 0⤊ 1⤋