Why can there be only one way to draw a triangle with two sides and an included angle are given

Rearrange the formula c^2 = a^2 + b^2 for b

Given: hf || jk; hg ? jg prove: fhg ? kjg to prove that the triangles are congruent by asa, which statement and reason could be used as part of the proof? fgh ? kgj because vertical angles are congruent. jkg ? hfg because vertical angles are congruent. fhg ? jkg because right angles are congruent. hfg ? kjg because alternate interior angles are congruent.

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a