yes
Like all triangles, the angles of an iscoceles add up to 180 degrees
No not all obtuse triangular are similar. :)
similar triangles have all the same angles in each of them, and their sides can be of any length
Only right triangles.
Yes.
no
No.
No.
hi
90 degree triangles are always similar.
NO! Only REGULAR Pentagons. All equilateral triangles are similar!!!
Triangles are congruent if all three sides in one triangle are congruent to the corresponding sides in the other.When two triangles have corresponding sides with identical ratios, the triangles are similar.Of course if triangles are congruent, they are also similar.