Question on mathswatch, what special name can be applied to this shape?

Equilateral Triangle

Isoceles Triangle

Right Angle Triangle

Scalene Triangle

Factor and solve to find roots x squared -x - 90 =0

Qrst is a parallelogram. determine the measure of ∠q pls

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.