What is 0.83 repeating

Given that ot =5, xt=12, and ox= 13 is xy tangent to circle o at t? explain.

Given: and prove: what is the missing reason in the proof? given transitive property alternate interior angles theorem converse alternate interior angles theorem

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor