Answer and explain I’ll mark brainliest

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?

(05.02) mr. morris is going to save money and replace his sailboat's mainsail himself. he must determine the area of the mainsail in order to buy the correct amount of material. calculate the area of the parallelogram to determine how much material should be purchased. be sure to explain how to decompose this shape into rectangles and triangles. describe their dimensions and show your work.