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Grade 9/Math.md
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@ -269,13 +269,13 @@
> 8. ```Sum of The Interior Angle of a Polygon```
> - The sum of the interioir angles of any polygon is ```180(n-2)``` or ```180n - 360```, where ```n``` is the number of sides of the polygon
<img src="https://i.ytimg.com/vi/tmRpwCM1K1o/maxresdefault.jpg" width="500">
> <img src="https://i.ytimg.com/vi/tmRpwCM1K1o/maxresdefault.jpg" width="500">
> 9. ```Exterior Angles of a Convex Polygon```
> - The sum of the exterior angle of any convex polygon is always ```360 degrees```
<img src="https://image.slidesharecdn.com/findanglemeasuresinapolygon-110307143453-phpapp02/95/find-angle-measures-in-a-polygon-11-728.jpg?cb=1299508555" width="400">
> <img src="https://image.slidesharecdn.com/findanglemeasuresinapolygon-110307143453-phpapp02/95/find-angle-measures-in-a-polygon-11-728.jpg?cb=1299508555" width="400">
> ## Properties of Quadrilaterals
@ -297,7 +297,7 @@
> ## 2D Geometry Equations
>> |Shape|Formula|Picture|
>> |:----|:------|:------|
>> |Rectangle|```Area```: lw <br> ```Perimeter```: 2(l+w)|<img src="https://lh5.googleusercontent.com/pJ-Pm3oA8_oLRtc_eEhTBrGqXazzsK4phUQ_QqrNl5vyk1t6pypO9waRBonuHJYv4_Z2I9G2jq8xc-6Tmhy3MpihW9ITWna49JQNDtQ" width="200">|
>> |Rectangle|```Area```: lw <br> ```Perimeter```: 2(l+w)|<img src="https://lh5.googleusercontent.com/Ib1Evz5PUwd4PzRmFkHj9IY2Is-UthHoUyyiEHAzkJP-296jZvMmHJM1Kws4PmuTeYHV2ZBIJenc4W1pKtsSHvU82lyjOed2XKBb1PWnoaeJ3sSPuaJgSTg8JWbxrvplabCanvTD" width="200">|
>> |Triangle|```Area```: bh/2 <br> ```Perimeter```: a+b+c|<img src="https://lh6.googleusercontent.com/covvHwXxQhrK2Hr0YZoivPkHodgstVUpAQcjpg8sIKU25iquSHrRd2EJT64iWLsg_75WnBw4T9P0OTBiZDkpqEkXxflZQrL16sNhcFfet_z4Mw5EPFgdx_4HzsagV0Sm5jN6EKr_" width="200">|
>> |Circle|```Area```: πr<sup>2</sup> <br> ```Circumference```: 2πr or πd|<img src="https://lh5.googleusercontent.com/RydffLVrOKuXPDXO0WGPpb93R8Ucm27qaQXuxNy_fdEcLmuGZH4eYc1ILNmLEx8_EYrRuOuxFavtL9DF1lTWYOx9WaYauVlu0o_UR6eZLeGewGjFNUQSK8ie4eTm1BMHfRoQWHob" width="200">|
>> |Trapezoid|```Area```: (a+b)h/2 <br> ```Perimeter```: a+b+c+d|<img src="https://lh6.googleusercontent.com/_nceVtFlScBbup6-sPMulUTV3MMKu1nonei0D1WY-KRkpHSbPCIWgDO8UGDQBGKh8i0dkAqOhFUHl7YHCFOt6AMRSJiXALlBBY0mBo1MMZxHRVcg8DknSlv4ng7_QswcZtaRwrJb" width="200">|