Being specific, name 3 ways that a parabola changes with different types of "a" values

Radii ok and nl are perpendicular to om because of the radius-tangent theorem. by definition of perpendicular, angles kom and lnm are right angles. this means that triangles kom and lnm are right triangles. angle lmn is common to both right triangles, so by the triangles kom and lnm are similar.

Which of the following statement about pascal's triangle are true?

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