Question

Show that the triangle PQR formed by the points P (√2, √2), Q (-√2, -√2) and R (-√6, -√6) is an equilateral triangle. (3)

Answer 1

Answer:

first we find length of all sides of triangle.

e.g.

PQ=√{(2√2)^2+(2√2)^2}=4

QR=√{(√2+√6)^2+(√2-√6)^2}=4

RP=√{(√2+√6)^2+(√2-√6)^2}=4

here we see

PQ=QR=RP

hence ∆PQR is an equilateral triangle

Answer 2

Answer:

brilliant answer mr tsr