Answer:
the awnser is B
Step-by-step explanation:
the awnser is B
Answer:
See below.
Step-by-step explanation:
m∠A + m∠B = m∠B + m∠C
Use the subtraction property of equality to subtract m<B from both sides of the equation.
m∠A + m∠B - m<B = m∠B - m<B + m∠C
m∠A = m∠C
C. 100 because a quadrilateral must add up to 360. :)
