2000005909 | math4u.vsb.cz

SubArea:

Level:

Project ID:

2000005909

Accepted:

0

Clonable:

0

Easy:

1

The regular octagon

A B C D E F G H

is inscribed in the circle. Calculate the magnitudes of the interior angles of the chordal quadrilateral

H B C F

. (See the picture.)

α = 90^{\circ}

;

β = {112.5}^{\circ}

;

γ = 90^{\circ}

;

δ = {67.5}^{\circ}

α = 90^{\circ}

;

β = {67.5}^{\circ}

;

γ = 90^{\circ}

;

δ = {67.5}^{\circ}

α = 90^{\circ}

;

β = {122.5}^{\circ}

;

γ = 80^{\circ}

;

δ = {67.5}^{\circ}

α = 90^{\circ}

;

β = {67.5}^{\circ}

;

γ = 90^{\circ}

;

δ = {112.5}^{\circ}