Triangles

In $\triangle ABC$, if $\angle A = \angle B = \angle C$, then the triangle is:

If $\triangle DEF \cong \triangle PQR$ and $\triangle PQR \cong \triangle XYZ$, then $\triangle DEF \cong \triangle XYZ$ is an example of:

If $\triangle ABC$ is an isosceles triangle with $AB = AC$, then the bisector of $\angle A$ is ____ to $BC$.

If $\Delta ABC \cong \Delta QRP$, then $AB$ is equal to ______.

Two triangles are congruent if two angles and the included side of one are equal to the corresponding parts of the other. This is ______.

In $\Delta ABC$, if $\angle A = \angle B = \angle C$, then the triangle is ______.

In $\triangle ABC$, if $AB = BC$, then the triangle is specifically called a/an:

If the base of an isosceles triangle is produced both ways, the two exterior angles so formed are:

If a side of a triangle is produced, the exterior angle so formed is equal to the:

In $\triangle ABC$, if $AB = AC$, then the angle opposite to $BC$ is:

In $\triangle PQR$, if $\angle P = 30^\circ$ and $\angle Q = 60^\circ$, then which side is the shortest?

Given $\triangle ABC$, which is always true?