AB + CD = BC + DA
<span>Where A, B, C, and D are points on the quad, and AB is the length of the line A to B, etc. </span>
<span>Since you know three sides, you can easily solve for the fourth. </span>
當我點擊圖片查看答案時，一切都很模糊，我什麼也看不到。拍個更清晰的圖讓我回答一下！！
Answer:
23+12=
Step-by-step explanation:
you just need figure it out in your head and see what sounds right
8,516.90 has the greater value.
Answer:
x = -1
Step-by-step explanation:
