ABD: 22
DBC: 109
they are congruent angles
Answer:
144
Step-by-step explanation:
The measure of each interior angle formula:

Answer:
K=-89
Explanation:
K=10(-7)-19
Answer:
y=8.
Step-by-step explanation:
1) if according to the condition slope=0, then the slope-interception form of the required equation is: y=i, where i - interception;
2) if according to the condition the point (4;8) belongs to the required equation, then the required equation is: y=8