This is an octogram made by triangles pointed towards the center of the octogon. The right and left sides are inverted colors because this was something I saw on my mom's shirt and it was that way. Actually, on her shirt they were inside a circle instead of octogon, but this just seems cooler.
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inward triangle octogram divided free icon was designed by 10binary for icons Png and presented to its users.
10binary
1/30/2018