Answer:
All sides are the same length (congruent) and all interior angles are the same size (congruent). To find the measure of the angles, we know that the sum of all the angles is 1260 degrees (from above)... And there are nine angles... So, the measure of the angle of a regular nonagon is 140 degrees.
Step-by-step explanation:
Answer:
x will have to be 45 to make this true
Step-by-step explanation:
Answer:
What's the question?
Step-by-step explanation:
Answer:
Step-by-step explanation:
Subtract 9 on both sides