In patrulaterul convex ABCD, masurile unghiurilor A, B, C si D sunt proportionale cu numerele 2,4,6 si respectiv, 8. a) calculati masurile unghiurilor patrulaterului b) stiind ca [DE este bisectoarea unghiului ADC, E apartine (AB), stabiliti natura triunghiului ADE c) aratati ca BCDE este paralelogram

cool stunts are flippin i think

sitting on a chair

and using stick feet

step-by-step explanation:

rectangles are made up of 4 right angles, which means that a side and a base meet perpendicular to one another.   their slopes then have to reflect perpendicular slopes.   perpendicular slopes are opposite reciprocals of one another.   for example, if the slope of one line is +2/3, then the perpendicular slope to that would be -3/2.   so we look for that combination in our choices.

all of them satisfy that condition (so what's the question, i guess? )