Use the number line below to determine the ratio of BC to GK. A number line. From left-to-right, the points are A, 0; B, blank; C, 20; D, blank; E, 40; F, blank; G, 60; H, blank; I, 80; J, blank; K, 100.

b is the final answer! : )

if the angular bisector of an triangle bisects the opposite side, prove that the other two sides are equal.

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.