∠a and ∠e are angles.
a) perpendicular
b) corresponding
c) complementary
d) alternate interior
e) alternate exterior

The missing figure is attached down

∠a and ∠e are  corresponding angles ⇒ B

Step-by-step explanation:

In the attached figure

∵ AB // CD and intersected by a transversal

∴ ∠a = ∠e ⇒ Corresponding angles

∴ ∠b = ∠f ⇒ Corresponding angles

∴ ∠c = ∠g ⇒ Corresponding angles

∴ ∠d = ∠h ⇒ Corresponding angles

∴ ∠c = ∠f ⇒ alternate interior

∴ ∠d = ∠e ⇒ alternate interior

∴ ∠a = ∠h ⇒  alternate exterior

∴ ∠b = ∠g ⇒  alternate exterior

∠a and ∠e are  corresponding angles

Learn more:

You can learn more about the parallel lines in

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b i think

step-by-step explanation:

not really sure

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this