5, 3, 2, 1, -1, 0,
what two terms come next?

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.

you estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82 .the total height of the building is another 123 meters above the 86th floor.

leave feedback if u need : )

x:       y:  

-1         4

0         4

1         6

2         18

3         20  

we would need a picture of the quadrilateral in order to answer the question. also, it seems that the question is missing some components.