Building blocks

Abstract

This item is composed of component pieces A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, and D2 of the same thickness (base scale). A1 and A4 are the same shape, A2 and A3 are the same shape, and when A1 and A4 are turned over, they become the same shape as A2 and A3. B1, B2, B3, and B4 are symmetrical shapes of the same shape. C1 and C4 are the same shape, C2 and C3 are the same shape, and when C1 and C4 are turned over, they become the same shape as C2 and C3. D1 and D2 are the same shape and are squares when viewed from the front. At least one side of component pieces A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, and D2 is the same shape as the base scale. This item is a building block that, when the constituent pieces A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, and D2 are combined, forms a mechanically correct arch.

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