heptagon

/hep-tuh-gon, -guhn/US // ˈhɛp təˌgɒn, -gən //UK // (ˈhɛptəɡən) //

七边形,七角形,七角星,七色光

Definitions

n.名词 noun

In the power room of the heptagon a hexan officer turned fiercely to another, who was offering advice.
As that dazzling wall sprang into being, the sparkling green protection died from the walls of the heptagon.
The massive heptagon was now drifting back toward Jupiter at constant velocity.
There he and his fellows labored day after day learning every secret of every item of armament and equipment aboard the heptagon.
The side of a regular heptagon is equal to half the side of an equilateral triangle inscribed in the same circle.