For the general case, the n-gon, you got

degrees. The 13-gon thus has 1980 degrees in total.
Answer:
<h2>
m∠ABC = 30°</h2>
Step-by-step explanation:
m∠BAD = 0.5m∠BCD = 0.5•126° = 63°
The angles in quadriteral add to 360°, so:
m∠ABC + m∠BAC + m∠ACD + reflex m∠BCD = 360°
m∠ABC + 63° + 33° + (360° - 126°) = 360°
m∠ABC + 96° - 126° = 0
m∠ABC = 30°
Answer:
(x -8)^2 +(y +3)^2 = 36
Step-by-step explanation:
The equation of a circle with center (h, k) and radius r is ...
(x -h)^2 +(y -k)^2 = r2
Putting your numbers into this form gives ...
(x -8)^2 +(y +3)^2 = 36
Answer:
Equation: x=2
Solution = 2
Step-by-step explanation:
add like terms so regular numbers like -5 and -3. Add positive 5 to 3 to get 2
And next the variables -2x+3x= x