Answer:
B=100
Step-by-step explanation:
A=100
C=100 (opposite angles are equal0
B=D= 100
complementary angles are 180 so
180-80=100
Answer:
a
Step-by-step explanation:
i am the smort
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Where the angle bisectors intersect determines the center of the incircle.
Where the side perpendicular bisectors intersect determines the center of the center of the circumcircle. From these definitions, you should be able to determine the points you want.