Answer:
100
Step-by-step explanation:
120 + 130 + 10 = 260
360 - 260 = 100
9 + 9 = 18
42 - 18 = 24
24 / 2 = 12
the length is 12 inches
The quadrilateral is a square
<h3>What are quadrilaterals?</h3>
Quadrilaterals are polygons, that have four sides and four corners
The coordinates are given as:
- A = (3, 5)
- B = (5, 2)
- C = (8, 4)
- D = (6, 7)
Start by calculating the adjacent side lengths using:

So, we have:




The side lengths are equal.
Hence, the quadrilateral is a square
Read more about quadrilaterals at:
brainly.com/question/5715879
Answer:
Step-by-step explanation:340 you are supposed to use Pythagorean theorem.