Question

determine plzzz hurry up​

Answer 1

Answer:

Right angled triangle

Step-by-step explanation:

Given sides are (a - 1), 2√a, (a + 1) cm.

Let, AB = (a - 1), BC = 2√a, AC = (a + 1).

By Pythagoras theorem, we get

⇒ AB² + BC² = (a - 1)² + (2√a)²

                     = a² + 1 - 2a + 4a

                     = a² + 2a + 1

                     = (a + 1)²

                     = AC²

∴ Hence the given triangle is a right angled triangle.

Hope it helps!