120 degrees the sum of all is 720
Find the lengths of the sides. Determine how long a right triangle side lengths are.
Answer:
164=82+82 or 164=82 x 2
Step-by-step explanation:
Hope that works
<h2>
Explanation:</h2>
In every rectangle, the two diagonals have the same length. If a quadrilateral's diagonals have the same length, that doesn't mean it has to be a rectangle, but if a parallelogram's diagonals have the same length, then it's definitely a rectangle.
So first of all, let's prove this is a parallelogram. The basic definition of a parallelogram is that it is a quadrilateral where both pairs of opposite sides are parallel.
So let's name the vertices as:

First pair of opposite sides:
<u>Slope:</u>

Second pair of opposite sides:
<u>Slope:</u>

So in fact this is a parallelogram. The other thing we need to prove is that the diagonals measure the same. Using distance formula:

So the diagonals measure the same, therefore this is a rectangle.
To find the area of a polygon you have to write the formula of it which is area= 1/2 x perimeter x apothem . hope this helps