Answer:
Each angle of a regular nonagon is 140°
Step-by-step explanation:
The sum of all the interior angles is equal to 1260°
Answer:
The quadrilaterals which have opposite angles congruent are parallelograms.
Hope it will help :)
The equation to calculate percent error is # experimental - #theoretical / # theoretical * 100. The experimental value is 24 and the theoretical value is 42. Here's the calculation 24-42/42 * 100 = -42.86 rounded. Hope this helped :))
Answer:
Option A. 
Step-by-step explanation:
we know that
The area of the irregular figure is equal to the area of two trapezoids
The area of trapezoid is equal to

where
b1,b2 are the parallel bases
h is the perpendicular distance between the parallel bases
<u>Find the left trapezoid area</u>

<u>Find the trapezoid area on the right</u>

The area of the irregular figure is
