An office heater puts out 2070 Btu (British thermal units) of energy in the form of heat per hour. Given that 1 Btu=1.055 kJ,
how many megajoules of energy in the form of heat can be produced per year (365 days) by the heater, assuming continuous operation?

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2