An obtuse angle.
To obtain the percent value for an angle (in slopes and inclines), calculate the tangent of that angle in degrees, then multiply the figure by 100.
A straight angle
Just Measure it
64º 136º 144º 54º
A whole angle is 360 degrees so the measure of a 35% angle is 126 degrees. The complement (not compliment) of this angle would have a measure of 90 - 126 = minus 36 degrees.
20% of a 360o circle is 72o
There is no figure to be seen but an isosceles trapezoid will have equal base angles.