Ok so i have like a grid and it says
"on the grid to the right, draw a polygon that has 2 pairs of parallel sides, 2 pairs of sides equal in length, and 2 acute and 2 obtuse angles. tell all the possible names for the figure."
so how am i supposed to draw haha.

Draw an isosceles trapezoid which has two parallel sides (the bases) and then two equal sides that. The angles between the smaller parallel side and the equal sides will form obtuse angles, and the angles formed by the larger parallel side and the equal sides will make acute angles.

The gregorian chant was a major cultural milestone in the middle ages. it was one of the first codified forms of music meant to be played as written, where previously it was difficult to mass-produce and disseminate any music. what's more, these chants were also some of the first examples of musical notation: the notes and bars of today's music sheets are a reflection of centuries of evolution beginning with these chants. it became official throughout the entirety of the catholic church, meaning that nearly all of europe followed this musical notation and styling.