For #16, it can be assume that the two angles are linear, so set them both equal to 90 (9x+x-10=90) and solve for x. Once you have x, plug it into the equations to find the measure of both angles. If both your final answers are added, they should equal 180. If not, go back and try to find where you messed up.
<span>2(x - 5) + 7 = x + 8
Use distributed property
2x - 10 + 7 = x + 8
Add 7 to -10
2x - 3 = x + 8
Subtract x from both sides
x - 3 = 8
Add 3 to both sides
Final Answer: x=11</span>
The change in the sign of the x coordinate transformed and no change in value of y coordinate shows transformation with y axis.
Some parallelograms have 2 obtuse and 2 acute angles.
Parallelograms may have all 90 degree angles as well. These are also called rectangles.
When you "bend" a rectangle it naturally forms 2 acute and 2 obtuse angles.
