-18, minus eighteen. icon for design. blank, white and black backgrounds - line icon - 代數 幅插畫檔、美工圖案、卡通及圖標
+1k, +1000, plus one thousand. icon with long shadow on blank background - flat design - 代數 幅插畫檔、美工圖案、卡通及圖標
x3, three times. icon for design. blank, white and black backgrounds - line icon - 代數 幅插畫檔、美工圖案、卡通及圖標
1 out of 2 - one half. icon with long shadow on blank background - flat design - 代數 幅插畫檔、美工圖案、卡通及圖標切半, 圖示
+10k, +10000, plus ten thousand. icon with two color overlay on white background - 代數 幅插畫檔、美工圖案、卡通及圖標
antique illustration, mathematics and geometry: geometric shape equality, pythagorean theorem - 代數 幅插畫檔、美工圖案、卡通及圖標畢達哥拉斯, 幾何圖形, 幾何學
