Refer to the attachment
koi h

Step-by-step explanation:

We know that:

Interior angles of a triangle add up to 180 degrees.

The angles are in a ratio of:

1 : 2 : 3

Add the terms of the ratio = 1 + 2 + 3 = 6

Divide it by 180

= 180 / 6 = 30

Now, the first angle is:

= 1 * 30 = 30°

The second angle is:

= 2 * 30 = 60°

The third angle is:

= 3 * 30 = 90°

Since, all the measures of the side are unequal, the triangle is a scalene triangle.

Since, there's a 90 degree measure, this means the triangle contains a right angle so it is also a right angled triangle

Hope this helped!

7

step-by-step explanation:

the answer would be 7