Glass having an inner surface and an outer surface, comprising: a first area used by a head-up display; and a second area adjacent to the first area, and not used by the head-up display, wherein representing an area closest to a boundary between the first area and the second area in the first area, by an edge on the boundary side in the first area, and representing an area closest to the boundary in the second area, by an edge on the boundary side in the second area, a wedge angle δ formed by the inner surface and the outer surface satisfies a following Formula at each point in a partial area of the second area including the edge on the boundary side in the second area: δ = t R c sin φ cos φ n 2 − sin 2 φ − η cos φ 2 n 2 − sin 2 φ where, except for a case of the wedge angle δ being uniform, t represents a thickness of the glass, R represents a local curvature radius of the glass, n represents a refractive index of the glass, and φ represents a local incident angle of a ray of light incident on the glass, wherein representing the wedge angle at the edge on the boundary side in the first area by δ h, and representing an angle of perspective double images at the edge on the boundary side in the first area by η h, η h is represented by a following Formula where η is an arbitrary value having a same sign as a sign of η h, and satisfies conditions of being less than or equal to a smaller one of 2|η h | and 9 if |η h |≤9, being less than or equal to |η h | if |η h |>9 (further, η is not 0 at all points in the part of the area, and 0<|η| is satisfied at the edge on the boundary side in the second area): η h = 2 ⁢ t R sin φ n 2 − sin 2 φ − 2 δ h n 2 − sin 2 φ cos φ a first area used by a head-up display; and a second area adjacent to the first area, and not used by the head-up display, wherein representing an area closest to a boundary between the first area and the second area in the first area, by an edge on the boundary side in the first area, and representing an area closest to the boundary in the second area, by an edge on the boundary side in the second area, a wedge angle δ formed by the inner surface and the outer surface satisfies a following Formula at each point in a partial area of the second area including the edge on the boundary side in the second area: δ = t R c sin φ cos φ n 2 − sin 2 φ − η cos φ 2 n 2 − sin 2 φ where, except for a case of the wedge angle δ being uniform, t represents a thickness of the glass, R represents a local curvature radius of the glass, n represents a refractive index of the glass, and φ represents a local incident angle of a ray of light incident on the glass, wherein representing the wedge angle at the edge on the boundary side in the first area by δ h, and representing an angle of perspective double images at the edge on the boundary side in the first area by η h, η h is represented by a following Formula where η is an arbitrary value having a same sign as a sign of η h, and satisfies conditions of being less than or equal to a smaller one of 2|η h | and 9 if |η h |≤9, being less than or equal to |η h | if |η h |>9 (further, η is not 0 at all points in the part of the area, and 0<|η| is satisfied at the edge on the boundary side in the second area): η h = 2 ⁢ t R sin φ n 2 − sin 2 φ − 2 δ h n 2 − sin 2 φ cos φ