The area of a parallelogram is twice the area the area of the rectangle

Use sigma notation to represent the following series for 9 terms.

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

]supplementary angles are two angles that add up to . • complementary angles are two angles that add up to degrees. • adjacent angles share a and a • congruent angles have the measure. • an triangle has one angle that is greater than 90 degrees. • a triangle with angles 45°, 45°, and 90° would be a triangle