Can a triangle have sides with lengths 6 cm, 5 cm and 8 cm?

Is it possible to have a triangle with the following sides?6 cm, 6 cm and 6 cm

Is it possible to have a triangle with the following sides? 4 cm, 4 cm and 8 cm.

Is it possible to have a triangle with the following sides?3 cm, 5 cm and 7 cm

Is it possible to have a triangle with the following sides? 3 cm, 4 cm and 6 cm.

Is it possible to have a triangle with the following sides?3 cm, 4 cm and 5 cm

Construct an equilateral triangle, given its side of length of 4.5 cm and justify the construction.

Construct a Triangle of sides 4 cm, 5 cm and 6cm. Then, construct a Triangle similar to it, whose sides are 2//3 of the corresponding sides of the first Triangle.

Construct a triangle of sides 5 cm, 6 cm and 7cm then construct a triangle similar to it, whose sides are 2//3 of a corresponding sides of the triangle.

Determine whether the triangle having sides (a - 1)cm , 2 sqrt a cm and (a + 1) cm . Is a right angled triangle.

Construct a Triangle of sides 4.2cm, 5.1 cm and 6 cm. Then construct a Triangle similar to it, whose sides are 2//3 of corresponding sides of the first triangle.