Question

tell me how to do this i cant able to understand (only 6 th one)​

Answer 1

Answer:

1 unit =x.

The following ratio is 1:2:3.

The sum of the three angels are 180 degrees.

Following x+2x+3x= 180

or, 6x=180

or,x=180÷6

or,x=30

The value of x is 30

Therefore the measure of the three angels are 30degree,60degree,90 degree.

One angel of the triangle is 90 degree so it is a right angel.