9. In the accompanying diagram, ABCD is a rhombus. If m< EBC = 30 and BD= 20, what is the exact length of BC ?

❤️ (geometry) does the construction demonstrate how to copy an angle correctly using technology a) yes; the distance between points a and f was used to create circle h b) yes; the distance between points f and g was used to create circle h c)no; the distance between points a and f was used to create circle h d) no; the distance between points f and g was used to create circle h