In one of the MGMAT CAT tests, i found this
If BE CD, and BC = AB = 3, AE = 4 and CD = 10, what is the area of trapezoid BEDC?
.A
/ \
B/___ \ E
/ \
c---------D
... using proportions > AD = 8
In the answer, it states ->
Triangle CAD is a right triangle since it has side lengths of 6, 8 and 10, which means that triangle BAE is also a right triangle (they share the same right angle).
Can the sides determine the type of triangle ? (in this case, it is a triangle rectangle because of 6,8 and 10) i read somewhere, that it cannot ? So, if i see a triangle 2,1,1*sqrt(3) , then it must be a 30-60-90 ?
Please do let me know
Very much appreciated .
Bruno