Question

10. The sides of certain triangle are (a - 1)cm. 2√a cm. (a+1) Determine whether the triangle is a right triangle​

Answer 1

Answer:

the triangle is a right triangle

Step-by-step explanation:

sum of the squares of two sides

=(a-1) ^2+ (2√a)^2

= a^2+1-2a+4a

= a^2+1+2a

= (a+1)^2

= square of third side

sum of the squares of two sides= square of third side

so the triangle is a right triangle