Describe some of the unusual things about grandpa portman's island carinholm also provide details about the inhabitants describing each below 3-5 sentences long

answer with step-by-step explanation:

a. ∠j is supplementary to ∠k - true:

(opposite angles of a trapezoid are supplementary which means that they add up to 180 degrees)

b. kl is parallel to jm - true:

(opposite sides are parallel to each other in a trapezoid)

c. jk is perpendicular to kl - false:

(clearly, jk does not make a right angle with kl)

d. jk is parallel to lm - false:

(jk and lm are two lines opposite in direction to each other so they cannot be parallel)

e. ∠j is congruent to ∠m - true:

(the angles on each side of the base are congruent)

f. ∠j is congruent to ∠k - false:

(the angles on the same side but opposite side of the base are not congruent)

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

step-by-step explanation:

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two