So for this you need to use the properties of a triangle.
all angles within a triangle add up to 180
so on a rhomboid, given that all sides are of equal length, the top half and bottom half are essentially isosceles triangles.
therefore angle 2 = angle 4 and angle 1 = angle 3 so:
180 - 106 = 74 = ang 2 + ang 4
74/2 = angle 2 = angle 4 = 37 degrees
this is the angle for 1 and 3 as well because their triangle is a relflection of the lower triangle so all angles = 37 degrees
for the second question:
angle 1 + angle 2 + 26 = 180
but like in the previous example since those 3 angles form an isosceles triangle, angle 1 = 26 as well.
therefore,
180 = 26 + 26 + angle 2
180 - 26 - 26 = angle 2
angle 2 = 128
and since the upper triangle is a reflection of the lower triangle,
angle 3 = angle 2 = 128
