Geometry help! Law of Detachment?

Question

Use the law of detachment to determine a conclusion that follows from, statement (1) & (2). If valid conclusion dose not follow, write no valid conclusion

1.

(1)If a figure is a triangle, then its a polygon

(2)The figure is a triangle

2.

(1)If I sell my skis, then I will not be able to go skiing

(2)I did not sell my skis

3.

(1)If two angles are complementary, then the sum of their measures is 90

(2)Angle A and B are complementary

4.

(1)If the measures of the lengths of two sides of triangle are equal, then the triangle is isosceles.

(2)Triangle ABC has two sides with lengths of equal measure

5.

(1)If it rains, we will not go on picnic

(2)We do not go on picnic

Answer 1

1.  then it is a polygon

2.  No valid conclusion

3.  the sum of their measures is 90

4.  the triangle is isoceles

5.  No valid conclusion