(on geometry )

19. in δdef, if δde ≅ δdf is the hypotenuse, then δdef is

a. acute and scalene.
b. right and scalene.
c. right and isosceles
d. obtuse and isosceles

20. the measure of two angles of a triangle are 38° and 47° what type of triangle is this ?

a. acute
b. obtuse
c. right
b. equiangular

21. if δigh ≅ δklj, then ∠h is congruent to

a. ∠k
b. ∠l
c. ∠j
d. ∠g

Yes i also think it is b

The skating rink rented 872 pairs of skates during april and may.why? : if the skating rink rented three times the pair of skates in april during may, they rented 654 skates. 218 x 3 = 654then, if they want to know how many they rented during both april and may, then you just add 654 (may) and 218 (april) to give you 872 pairs of skates for both months.654 + 218 = 872hope this !