Mathematicians, it's a rainy day but Susanna Post, the 2021 Arkansas Teacher of the Year, is on the hunt. Can you help in her scavenger hunt to find examples of parallel and perpendicular lines? Rise ...

The base and perpendicular height are at right angles. Showing that a parallelogram has the same area as a rectangle: Split the parallelogram into a right-angled triangle and a trapezium. Move the ...

Self-parking cars are becoming increasingly popular as technology advances, and people look for ways to make their lives easier. After all, they can park themselves in parallel or perpendicular spots ...

Abstract: Parallel micro-manipulators adopt flexible joints and the flexible deformation makes the up-platform move. Considering the counter-force/moment of the flexible joints, we concern the statics ...