Perimeter and Area (1)

Mathematics

Perimeter

The total length of all sides

Unit of perimeter

According to the unit of the calculated object circumference

Perimeter of equilateral triangle

Perimeter of isosceles triangle

8 cm + 8 cm + 6 cm = 22 cm

Perimeter of right angle triangle

5 cm + 13 cm + 12 cm = 30 cm

Area

The size of the object surface

Unit of area

Square units

Rectangular area formula

Length x width

Right angle triangle area formula

1/2 x length x width

Tips height and base of various triangles