In the given figure, DE ∥ BC and BD = CE. Prove that ∆ ABC is an isosceles triangle. 33. Ina construction site where multistorey buildings are constructing, structures of 2 towers (named as ...

From black triangles to yellow hooks on the wings and tiny holes in the windows, they're design elements with one purpose - safety. Read on to find out how these seemingly insignificant details ...