1103021509 | math4u.vsb.cz

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Project ID:

1103021509

Source Problem:

Accepted:

1

Clonable:

1

Easy:

1

A regular dodecagon

A B C D E F G H I J K L

is inscribed in a circle. Find the measures of all interior angles of the quadrilateral

A B H J

. (See the picture.)

α = 120^{\circ}; β = 75^{\circ}; γ = 60^{\circ}; δ = 105^{\circ}

α = 105^{\circ}; β = 60^{\circ}; γ = 75^{\circ}; δ = 120^{\circ}

α = 120^{\circ}; β = 30^{\circ}; γ = 60^{\circ}; δ = 105^{\circ}

α = 105^{\circ}; β = 75^{\circ}; γ = 75^{\circ}; δ = 105^{\circ}