In ΔHIJ, \overline{HJ} HJ is extended through point J to point K, \text{m}\angle IJK = (7x-15)^{\circ}m∠IJK=(7x−15) ∘ , \text{m}\angle JHI = (3x+18)^{\circ}m∠JHI=(3x+18) ∘ , and \text{m}\angle HIJ = (x+6)^{\circ}m∠HIJ=(x+6) ∘ . Find \text{m}\angle JHI. m∠JHI.

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