아라비아 숫자가 이렇게 생긴 이유

<div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin" data-link="https://cafe.daum.net/subdued20club" data-link-newwindow="_blank"><a href="https://cafe.daum.net/subdued20club" target="_blank" class="ke-link"><img src="https://t1.daumcdn.net/cafeattach/1IHuH/c66b4a1a23c64192bd183f48a1868843d96257d5" width="288" height="288" data-img-src="https://t1.daumcdn.net/cafeattach/1IHuH/c66b4a1a23c64192bd183f48a1868843d96257d5" data-origin-width="1024" data-origin-height="1024"></a></div><p style="text-align: center;">출처: <a href="https://m.cafe.daum.net/subdued20club/ReHf/1825845?svc=cafeapp" target="_blank" class="ke-link">https://m.cafe.daum.net/subdued20club/ReHf/1825845?svc=cafeapp</a></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/1IHuH/e5c061b4431c54b28178ee68029170515eb383ee" class="txc-image" data-img-src="https://t1.daumcdn.net/cafeattach/1IHuH/e5c061b4431c54b28178ee68029170515eb383ee" data-origin-width="640" data-origin-height="359"></div><p style="text-align: center;">숫자가 포함하는 각의 수<br>1=1개의 각<br>2=2개의 각<br>3=3개의 각<br>이런식으로 되는 원리<br>.<br>.<br>.</p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/1IHuH/ad81ab01a663c0dd5c7cb70c5046e1859cf5f39b" class="txc-image" data-img-src="https://t1.daumcdn.net/cafeattach/1IHuH/ad81ab01a663c0dd5c7cb70c5046e1859cf5f39b" data-origin-width="640" data-origin-height="480"></div><p style="text-align: center;">1,2,3,4.... 각자 각이 1,2,3,4개씩 있음....<br><br></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/1IHuH/124384197d779d829720dcaa33996fcd75cc6561" class="txc-image" data-img-src="https://t1.daumcdn.net/cafeattach/1IHuH/124384197d779d829720dcaa33996fcd75cc6561" data-origin-width="640" data-origin-height="480"></div><p style="text-align: center;">7과 5<br><br></p><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/1IHuH/5a5342bfa86fb03f2747953812be39eb84518006" class="txc-image" data-img-src="https://t1.daumcdn.net/cafeattach/1IHuH/5a5342bfa86fb03f2747953812be39eb84518006" data-origin-width="640" data-origin-height="480"></div><p style="text-align: center;">9도 마찬가지...ㄷㄷ<br><br><br>아라비아숫자는 인도인들이 발명한거라던데<br>대단..<br><br>크으으으</p>