4 and 7 and 8 and 9 and10
The pair of triangles that can be <span>proved congruent by SSS theorem would be the triangles where the corresponding sides of each triangle being equal. From the images attached,
http://assets.openstudy.com/updates/attachments/50a1326be4b05517d536a6cf-geomentry-1352741498116-653....
http://assets.openstudy.com/updates/attachments/50a1326be4b05517d536a6cf-geomentry-1352741506883-653...
I think the correct answer would be the triangles in F.</span>
The point-slope form:
We have the point 
and the slope 
.
Substitute:
80% is 128 of the number 160 For example: 128/160 = 80%
