Answer:
Following are the solution to the given points:
Step-by-step explanation:
For point a:

For point b:
For point c:


For point d:
For point e:

For point f:

Answer:
Step-by-step explanation:
Reasons
2. If two lines are parallel, their corresponding angles are congruent.
3. Congruent angles are equal... Why do they even have this step?
4. A straight line forms a linear pair.
5. Angles in a linear pair are supplementary.
6. ∠1 is supplementary to ∠3. Reason: If an angle is congruent to an angle that is supplementary to a third angle, the first and third angles are congruent OR Transitive Property.
20:15 which reduces to 4:3 or 4/3 or 4 to 3 , hope that helped have a good day
It means that the two vectors are perpendicular or orthogonal
Could you explain this better. Maybe in a picture or better format?