This serving platter features a clear, pressed glass design resembling a flower or sunflower petals with pointed, petal-shaped arches and beveled crosses at the tip of each arch. The “Petal Pattern #2829” was first introduced by Federal Glass in the 1950s and reissued in the late 1970s. This pattern is known by names such as "Petal Clear #2829", "Flower Petal", or simply "Petal". 11½” in diameter, 1” high. Some minor scratches in the center consistent with age, but no chips or cracks.
See also my post for Vintage Federal Glass Petal Pattern Bowl, which coordinates with this plate.