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Three lines of obtuse angle arrow heads with each different size. arrows with separate arrowheads and arrowheads. combined black rectangle with three arrow heads.
violet abstract background with obtuse triangle shapes and shadows.
Obtuse angle in geometry mathematics.
Types of triangle: By lengths of sides (equilateral, Isosceles, Scalene) By internal angles (Right, Obtuse, Acute). illustration for educational and science use
Types of Angles in Geometry. Acute, Right, Obtuse, Straight and Reflex Angle. Complete angle or Full rotation. Education. Science. School. Vector illustration

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