An equilateral triangle has a height of 6 centimeters. What is the exact length of one of the sides of the triangle? 4 cm
O 23 cm
O 2 cm
O 473 cm

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong