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In a parallelogram, opposite angles are equal. Since two angles measure 40 degrees each, the opposite angles are also 40 degrees. Therefore, the measures of the other two angles in the parallelogram are also 40 degrees each.
64 degrees because the total of the angles has to equal 360 degrees for it to be a hexagon.
In an isosceles triangle two of the sides are equal, as well as two of the angles. Because a triangle's interior angles add up to 180, only one angle could be 108, therefore the other two angle must be equal. To find the measure of the other two angles 180 - 108 = 72/2 = 36.
An exterior angle of a triangle is equal in measure to the sum of the other two interior angles.
They measure 105 degrees each.