Повторение по теме"Четырехугольники и их площади"

Тема «Повторение по теме «Четырехугольники и их площади»

(математический кроссворд и карточки по теме)

Автор: Осипова М.В.

г.Ковров, Владимирская обл., МБОУ СОШ №9

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Математический

кроссворд    по теме «Четырехугольники»        8кл.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

 По горизонтали:

1.     Четырехугольник, у которого противолежащие стороны параллельны.

2.     Четырехугольник, у которого только две противолежащие стороны параллельны.

3.     Параллелограмм, у которого все углы прямые.

4.     Точки, из которых выходят стороны четырехугольника.

По вертикали:

1.     Сумма длин всех сторон.

5. Отрезок, соединяющий противолежащие стороны четырехугольника.

6.     Прямоугольник, у которого все стороны равны.

7.     Параллелограмм, у которого все стороны равны.

8.     Отрезок, соединяющий соседние вершины.

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Ко всем четырехугольникам подбери формулы для вычисления их площади:

Четырехугольники	Формулы для вычисления площади
Квадрат
Прямоугольник
Параллелограмм
Трапеция
Треугольник

а)  S=ah                                      г)  S=h                       ж) S= a²

б) S= ah                                     д) S= ab

в) S= ab                                  е) S= ab

Ко всем четырехугольникам подбери формулы для вычисления их площади:

Четырехугольники	Формулы для вычисления площади
Квадрат
Прямоугольник
Параллелограмм
Трапеция
Треугольник

а)  S=ah                                      г)  S=h                       ж) S= a²

б) S= ah                                     д) S= ab

в) S= ab                                  е) S= ab