The coordinates of the vertices of △rst are r(−3,1), s(−1,4), and t(3,1) .

which statement correctly describes whether △rst is a right triangle?

△rst is a right triangle because rs¯¯ is perpendicular to rt¯¯ .

△rst is a right triangle because rs¯¯ is perpendicular to st¯¯ .

△rst is a right triangle because st¯¯ is perpendicular to rt¯¯.

△rst is not a right triangle because no two of its sides are perpendicular.

If the coordinates of the vertices of △RST are R(−3,1), S(−1,4), and T(3,1), then you can consider vectors:



Then check is there any perpendicular two vectors using dot product:



Since there are no dot product that is equal to zero, no two of triangle's sides are perpendicular and this triangle has no any right angle.

Correct choice is D.

anser is a

step-by-step explanation:

negitive slope

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2