They are always supplementary.
That means their measures always add up to 180 deg.
If they both measure 90 deg, then they are also congruent, but they do not have to be congruent.
Answer is b) sometimes.
1. Downward
2. (-4, -3)
3. No x-intercept, y-intercept is at (0, -7)
4. x = -4
Answer:
5cm wide, 10cm long.
Step-by-step explanation:
I came to this answer by looking for common factors between 50 and 5, and I found 10.
5cm + 5cm = 10cm, so it works.
To confirm this, I multiplied 5 and 10 and got 50cm (squared) which works.