Help please.. its quiet easy anyway xd

An equilateral triangle is a triangle in which all three sides are equal. An equilateral triangle is also equiangular, in which all three internal angles are also congruent to each other and are each 60°.

Parallelogram and rhombus possibly.

Trapezoid.

Part a)

Three equal sides

Three equal angles

Part b)

1) Rhombus

2) Parallelogram

[Both have 2 pairs of parallel sides and thus have their opposite angles equal]

Part c)

Trapezoid [Have exactly 1 pair of parallel sides]