Triangle EFG has an incenter and orthocenter of D. What kind of triangle is triangle EFG?

7. the area of the playing surface at the olympic stadium in beijing isof a hectare. what area will it occupy on a plan drawn to a scaleof 1: 500?

1) what is the measure of the exterior angle, ∠uvw ? 2) in triangle man, what is the measure of the exterior angle at n (in degrees)?

How many solutions does the nonlinear system of equations graphed below have?