Which term describes the point at which the perpendicular bisectors intersect in a triangle?

Two lines parallel to a third line are parallel to each other. always sometimes or never

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?