1)
2) is a right angle (perpendicular lines form right angles)
3) is a right triangle (definition of a right triangle)
4) and are complementary (the acute angles of a right triangle are complementary)
Because it goes up for a constant rate, to find the rice for 1 hour of parking do 16.00-12.50 and get 3.50 . To find the fee, just subtract 12.5 - 3.5
The fee for parking is $9
Hope this helps
It should be $4 sorry if it is wrongbut i pretty sure that is he answer