The mathematics department has six committees, each meeting once a month. how many different meeting are c 1 = {arlinghaus, brand, zaslavsky}, c 2 = {brand, lee, rosen}, c 3 = {arlinghaus, rosen, zaslavsky}, c 4 = {lee, rosen, zaslavsky}, c 5 = {arlinghaus, brand}, and c 6 = {brand, rosen, zaslavsky}?

idk

step-by-step explanation:

can you post the graph?

m∠abd = m∠dbc

step-by-step explanation:

given : ab bisects ∠dbc

as we know that bisection means ab divides   ∠dbc   in two equal angles named as   ∠dba and   ∠abc

so, m∠abd = m∠dbc  

because ab bisects ∠dbc.

hence , the first statement m∠abd = m∠dbc is true.