数一数,图中中有多少个三角形?2w7s4I.W-R/\*G:i0X)y+A
2w7s4I.W-R/\*G:i0X)y+A
解法一:2w7s4I.W-R/\*G:i0X)y+A
算式:提示0[3y1G/{2~4M.]:S*F7J:M2I+O2w7s4I.W-R/\*G:i0X)y+A
解法二:2w7s4I.W-R/\*G:i0X)y+A
算式:提示+Y/d'I;q/g5y'X2a2w7s4I.W-R/\*G:i0X)y+A
解法三:2w7s4I.W-R/\*G:i0X)y+A
算式:提示4@)y:R3I-x2w7s4I.W-R/\*G:i0X)y+A