Answer:
1) ∠A = 90º Square
2) ∠A = 140º Parallelogram
3) ∠A = 90º Rectangle
4) ∠A = 95º Rhombus
5) ∠A = 60º Trapezoid
6) ∠A = 41º Parallelogram
Explanation:
There just some points I want to state:
Rhombus is a quadrilateral with all sides being equal and opposite sides being parallel. Also, the opposite angles are equal, and the the diagonals bisect each other at right angles (90º).
In order to find the angles, just consider:
Sum of internal angles = 360º
You may also note the complementary and supplementary angles.