equal
It is an isosceles triangle
An isosceles triangle has three interior angles whose base angles are equal.
An isosceles triangle has two equal angles in the base.
An isosceles triangle has 2 equal sides and 2 equal base angles
The base angles of an isosceles triangle are congruent.
The two base angles are equal
The base angles of an isosceles triangle are the two angles that are equal to each other. They can be between 89.999...o and 0.000000..01o.
An isosceles triangle has 2 equal base angles and its height is perpendicular from its apex to the centre of its base
An isosceles triangle has 2 equal sides and 2 equal base angles
An isosceles triangle has two equal sides and two equal base angles.
Both have equal sides and equal base angles An isosceles trapezoid is made from an isosceles triangle that's had its top cut off parallel to its base