Предмет: Геометрия, автор: lubov7791

найдите точку симметричную точке (1,2,3) относительно плоскости Оху

Ответы

Автор ответа: dnepr1

Точка, симметричная точке (1; 2; 3) относительно плоскости Оху, имеет координату по оси Oz с другим знаком.

Это точка (1; 2; -3).

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: nikitatampo

помогите пожалуйста очень надо!!!

I. Circle the correct word.
1 opportunity
a) chance b) warning c) alive spirit

3 unhappy
a) alive b) depressed c) toward

4 in the direction of
a) toward b) chance c) alive

5 change
a) alive b) depressed c) turn into
Reading Skills

II. Circle the correct answer

1) Which of the following statements best expresses the main idea(виражає головну iдею) of the story?
a) Lincoln was a good president. c) Lincoln “saw” the end of his life.
b) Lincoln lived in the White House. d) Lincoln was important in the Civil War.

2) Which of the following statements support(підтверджують) the main idea of this story?
a) Lincoln died at 7 a.m. c) Lincoln sometimes went to the theater.
b) Lincoln had nightmares. d) You can visit the White House today.

3) Which of the following statements is not mentioned(згаданi) in the story?
a) Lincoln gave a warning. c) People have seen Lincoln’s ghost.
b) Lincoln was married. d) Lincoln was murdered in a theater.

4) Why did Lincoln call a government meeting?
a) He made an important decision. c) He wanted to vote on a law.
b) He wanted to give a warning. d) He had won the Civil War.

5) Why did he probably tell his friend about his nightmare?
a) He was worried about his dreams. c) His friend was a doctor.
b) He thought it was a funny story. d) He liked to tell stories.

6) What conclusion can you draw about Lincoln?
a) He was a good president. c) He felt that something bad would happen.
b) His government was loyal. d) His ghost is an important tourist attraction.

7) What conclusion can you draw about the story?
a) Studying history is important. c) You shouldn’t go to the theater.
b) You should visit the White House. d) Maybe dreams can tell us something.

8) What happened first?
a) Tourists visit the White House. c) Lincoln changed into a ghost.
b) Lincoln had strange dreams. d) The Civil War ended.

9) Which of the following events happened in the middle of the story?
a) Tourists visit the White House. c) Lincoln was a good president.
b) Lincoln had strange dreams. d) The Civil War ended.

5 лет назад

Предмет: Химия, автор: sologubevgen8

Обчисліть об’єм вуглекислого газу (н.у.), який виділиться при взаємодії натрій карбонату з сульфатною кислотою 38,4 г. масою

5 лет назад

Предмет: История, автор: kovalevaanastasiya19

назвіть країни які у ХІХ ст. дали світові найвідоміших композиторів

5 лет назад

Предмет: История, автор: supergirllol

За счет чего эксплуатация колоний приносила огромные прибыли европейским странам?

8 лет назад

Предмет: Математика, автор: анна1632

помогите решить пример по действиям в столбик пожалуйста 270*720-126*36

8 лет назад