Sorry I wasn't able to do more than one because I don't have time but you can look at my example.< means open cycle and the one I did is less than or equal to so its a close cycle.if you are still confused you can ask me. Hope this helps. please add brainlist
Answer:
x=5
Step-by-step explanation:
We know that a pentagon is in total 540 degrees. From this, we add all other numbers and set them equal to 540 to solve for x.
So, after adding all the angles and setting them equal to 540, we get this.
21x+435=540
21x=105
x= 5
If you want, plug 5 into x and see if it adds up to 540 to check
21(5)+435=540
Answer:
Step-by-step explanation:
the formula for the area of a triangle is base*height divided by 2
