12-13 Math Flashcard

Front

What is the formula for calculating the area of a rectangle?

Back

Area = length × width.

Front

What is the area of a rectangle with a length of 5 cm and a width of 3 cm?

Back

15 cm².

Front

What is the area of a rectangle with a length of 8 cm and a width of 5 cm?

Back

40 cm².

Front

What is an acute triangle?

Back

A triangle with all angles less than 90 degrees.

Front

What is the perimeter of a rectangle?

Back

Perimeter = 2 × (length + width).

Front

What is the perimeter of a rectangle with a length of 10 cm and a width of 1 cm?

Back

22 cm.

Front

What is the classification of a triangle with one angle equal to 90 degrees?

Back

Right triangle.

Front

What is the classification of a triangle with one angle greater than 90 degrees?

Back

Obtuse triangle.

Front

What is the area of a rectangle with a length of 7 cm and a width of 2 cm?

Back

14 cm².

Front

What is the area of a rectangle with a length of 10 cm and a width of 5 cm?

Back

50 cm².