when two lines intersect, two pairs of angles are formed, They have the same measure. anyone know the blank ?! please help if you know thanks

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft.what is the area of the stage? enter your answer in the box. ft²