Answer:
243 divided by 3 equals 81 so r=81
Step-by-step explanation:
Answer:
8 units²
Step-by-step explanation:
2(2) + 2(2) = 8
Answer:
OE=53 and UH = 53
Step-by-step explanation:
Pythagoras theorem
I won't write out a formal proof; here's an outline.
H+X=180. definition of supplementary
H+F=180 crossing lines
X=F supplements of the same angle are equal, or just algebra
l || n When the alternate angles of a transverse line between two lines are congruent, the lines are parallel