Find the area of the Equilateral triangle — task. Maths CBSE Live product, Class 10 (2026-27).

Prove that the points \(A(a,a)\), \(B(-a,-a)\) and \(C(-\sqrt{3}a,\sqrt{3}a)\) are the vertices of an equilateral triangle. Calculate the area of this triangle.

\(3\sqrt{5}a^{2}\) \(\text{square units}\)
\(7\sqrt{5}a^{2}\) \(\text{square units}\)
\(4\sqrt{5}a^{2}\) \(\text{square units}\)
\(2\sqrt{3}a^{2}\) \(\text{square units}\)

Previous task

Exit to the topic

Next task

Send feedback

Did you find an error?

Send it to us!

6. Find the area of the Equilateral triangle

Question: