顶点的英文：
summit
peak

参考例句：

The apex of a triangle
三角形的顶点

Connect Vertex
连接顶点

Shanghai has not yet reached the zenith of her prosperity.
上海尚未达到繁荣的顶点。

A meridian that passes through the observer's zenith.
穿过观测者顶点的子午线。

Wherever he is satisfied with what he does, he has reached his culminating point, he will progress no more.
一个人对所做的事感到自满的，就达到了顶点，不会再前进了。

Chamfer Vertex
倒角顶点

Attain its zenith
达到顶点

Situated at the vertex or highest point;directly overhead.
顶点的在顶点或者最高点的;头的正上方的

The apex of the insect maxilla.
昆虫下颚的顶点

Highest point(of power,prosperity,etc);peak
(权力、繁荣等的)最高点;顶点

summit是什么意思：
n. 最高点；顶点；山顶；峰会，最高级会议；最高阶层

God is above the summit of heaven.
上帝是天堂的最高阶层。

Finally we gained the summit of the mountain.
我们终于到达了山顶。

From the summit there is a superb panorama of the Alps.
从峰巅俯瞰,阿尔卑斯山壮丽的景色尽收眼底.

He attain the summit of his ambition.
他达到了梦想的最高目标。

He arrived in Miami for a summit meeting.
他抵达迈阿密参加高峰会议。

peak是什么意思：
n. 顶峰；山峰；顶点；尖端；帽舌；帽檐
v. （使）达到高峰，达到最高值；消瘦；变憔悴
adj. 最高的；最大值的

the peaked ceiling; the island's peaked hills.
尖屋顶；岛上尖尖的山。

The peak is enveloped in clouds.
山峰深藏在云雾之中。

The crisis peaked in July 1974.
那场危机在1974年7月达到巅峰。

The peak seems to touch the sky.
山峰似乎已触及天空。

He began to peak and pine.
他日渐消瘦。