A rhombus.
it is a rhombus
It is a rhombus that fits the given description.
Its sides are congruent but not its angles because it has 2 equal opposite acute angles and 2 equal opposite obtuse angles.
a parralellogram or however its spelt
A rhombus.
it is a rhombus
It is a rhombus that fits the given description.
trapezoid
A scalene triangle is one of them
Because it has five angles it is a irregular pentagon.
A parallelogram or a rhombus
Angles and sides are congruent when they are identical. A shape with four identical sides and angles is a square.
It is a rhombus
Its sides are congruent but not its angles because it has 2 equal opposite acute angles and 2 equal opposite obtuse angles.
a parralellogram or however its spelt
It could be a hexagon which is stretched out so that one pair of opposite angles become acute - but they must be different otherwise you will have three pairs of parallel sides.