In a bowl, combine the sugar, cocoa powder, flour, & salt. Mix in the butter, vanilla, & eggs. Stir to combine. Grease & flour an 8x8 baking dish. Pour the batter into the baking dish. Bake for 30-35 minutes.
Let the brownies cool completely. Remove from the baking dish. Cut the entire thing in half into two rectangles. Then slice each rectangle into equally portioned triangles.