Answer :
r = -1
explination:
True, because the chord connect 2 points of the circumference, but radius connect the center and a point on the circumference.
18. Answer: D
<u>Step-by-step explanation:</u>
First, find the measure of the missing angle.
65° + 57° + x = 180°
122° + x = 180°
x = 58°
Next, match up the angles with the opposite sides:
65° ⇄ Swim
58° ⇄ Bike
57° ⇄ Run
Lastly, put them in order from least to greatest:
57° < 58° < 65°
⇒ Run < Bike < Swim
The only multiple choice option that is correct is Bike > Run.
*****************************************************************************
19. Answer: 22.3°
<u>Step-by-step explanation:</u>




D = 22.3°
Answer: CIRCLE C
Step-by-step explanation: