Question

A = set of all triangles, B= set of all right triangles, A-B=?

Answer 1

Answer:

Step-by-step explanation:

Letusassign

aforisosceles△

bforequilateral△

cforrightangle△

anddforacuteangled△.

NowYisasetofequilateraltriangles.

Anequilateraltriangleisalsoanisosceles

andacuteangled△.

∴Y={a,b,d}−−−−(1)

AgainWisasetofacuteangledtriangles.

Anacuteangledtrianglemaybeisosceles△,

andequilateral△.

∴W=d,a,b,scelene△

∴Y∩W={a,b,d}=Y(Ans)