The diagonals AC and BD of trapezoid ABCD intersect the midsegment MN at
points P and R respectively. If the short base DC =
10 cm and AB = 40 cm, find MN and PR.

Which triangle congruence postulate or theorem justifies my claim that the steps i made using construction paper and scissors produce an isosceles triangle? was it sss, sas, asa, aas, or hl?

Factor the following expression. 27y3 – 343 a. (3y + 7)(9y2 + 2ly + 49) b. (3y – 7)(9y2 + 2ly + 49) c. (3y – 7)(932 – 217 + 49) d. (3y + 7)(92 – 2ly + 49)

2.5 milligrams is equivalent to how many grams