carcular areas y perimetros

perimetros                                                                           
1:-  26 cm                                                                                                                                       
2:-  12 cm                                                                          
3:-  32 cm                                                                          
4:-  18 cm                                                                         
5:-  22 cm                                                                          
6:-  32 cm                                                                          
7:-  22 cm                                                                                      

tipos de triangulos

P=a+a+a=                                            P=A+A+B                          3 lados iguales y una base

P=6+6+6=9           3 lados                              P=3+3+2=8