If it is 0.5 miles from the white house to the washington monument and 1.2 miles from the washington monument to the capitol, how far is it from the white house to the capitol?

How to solve it and what thw answer is

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle