Answer to very first one: (-6,-4) (-10,4) (-5,3) (-4,-2)
Step-by-step explanation:
In trapezoid ABCD, it is given that:
AE = BE & DF = CF
Hence, points E and F are the mid points of the sides AB and CD respectively.
We know that:
In a trapezoid length of the line segment joining the mid points of non parallel sides is equal to one half of the sum of lengths of the parallel sides.

There is something wrong with drawing. IC intercepts with AB at A.
Answer:
1. 10 rainy days
2. 24 points
3. 4 cups
Explanation:
Divide thirty by three to get ten rainy days.
Divide 15 by 90, then multiply the product by four to get 24 points.
divide the volume value by 8.
Answer:
20.5 : 61.5
Step-by-step explanation:
1:3
1 + 3 = 4
82 ÷ 4 = 20.5
ratio of 1:3
1 × 20.5 = 20.5
3 × 20.5 = 61.5
20.5 : 61.5