This is all pushing the limits of what you can do easily. Your easiest approach might be to use Word to convert these objects to simple images.
In your example docx,
OMML (your first 4 examples), as i suggested to you on StackOverflow, xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math" so you can investigate omml2mathml and then use mathml tools to get your final output.
The chart - see my previous post in this thread.
The geometrical drawing:
Using xml Syntax Highlighting
<w:p w:rsidR="00962004" w:rsidRDefault="00BF722E" w:rsidP="00B8629A">
<w:r>
<w:rPr>
<w:noProof/>
<w:lang w:bidi="te-IN"/>
</w:rPr>
<mc:AlternateContent>
<mc:Choice Requires="wps">
<w:drawing>
<wp:anchor distT="0" distB="0" distL="114300" distR="114300" simplePos="0" relativeHeight="251669504" behindDoc="0" locked="0" layoutInCell="1" allowOverlap="1">
<wp:simplePos x="0" y="0"/>
<wp:positionH relativeFrom="column">
<wp:posOffset>1219835
</wp:posOffset>
</wp:positionH>
<wp:positionV relativeFrom="paragraph">
<wp:posOffset>641985
</wp:posOffset>
</wp:positionV>
<wp:extent cx="243840" cy="194945"/>
<wp:effectExtent l="635" t="3810" r="3175" b="1270"/>
<wp:wrapNone/>
<wp:docPr id="28" name="Text Box 18"/>
<wp:cNvGraphicFramePr>
<a:graphicFrameLocks xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"/>
</wp:cNvGraphicFramePr>
<a:graphic xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main">
<a:graphicData uri="http://schemas.microsoft.com/office/word/2010/wordprocessingShape">
<wps:wsp>
<wps:cNvSpPr txBox="1">
<a:spLocks noChangeArrowheads="1"/>
</wps:cNvSpPr>
<wps:spPr bwMode="auto">
<a:xfrm>
<a:off x="0" y="0"/>
<a:ext cx="243840" cy="194945"/>
</a:xfrm>
<a:prstGeom prst="rect">
<a:avLst/>
</a:prstGeom>
<a:solidFill>
<a:srgbClr val="FFFFFF"/>
</a:solidFill>
<a:ln>
<a:noFill/>
</a:ln>
<a:extLst>
<a:ext uri="{91240B29-F687-4F45-9708-019B960494DF}">
<a14:hiddenLine xmlns:a14="http://schemas.microsoft.com/office/drawing/2010/main" w="9525">
<a:solidFill>
<a:srgbClr val="000000"/>
</a:solidFill>
<a:miter lim="800000"/>
<a:headEnd/>
<a:tailEnd/>
</a14:hiddenLine>
</a:ext>
</a:extLst>
</wps:spPr>
<wps:txbx>
<w:txbxContent>
<w:p w:rsidR="00F4625C" w:rsidRPr="00F4625C" w:rsidRDefault="00F4625C">
<w:pPr>
<w:rPr>
<w:b/>
<w:sz w:val="8"/>
</w:rPr>
</w:pPr>
<w:r w:rsidRPr="00F4625C">
<w:rPr>
<w:b/>
<w:sz w:val="14"/>
</w:rPr>
<w:t>O
</w:t>
</w:r>
</w:p>
</w:txbxContent>
</wps:txbx>
<wps:bodyPr rot="0" vert="horz" wrap="square" lIns="91440" tIns="45720" rIns="91440" bIns="45720" anchor="t" anchorCtr="0" upright="1">
<a:noAutofit/>
</wps:bodyPr>
</wps:wsp>
</a:graphicData>
</a:graphic>
<wp14:sizeRelH relativeFrom="page">
<wp14:pctWidth>0
</wp14:pctWidth>
</wp14:sizeRelH>
<wp14:sizeRelV relativeFrom="page">
<wp14:pctHeight>0
</wp14:pctHeight>
</wp14:sizeRelV>
</wp:anchor>
</w:drawing>
</mc:Choice>
<mc:Fallback>
<w:pict>
<v:shapetype id="_x0000_t202" coordsize="21600,21600" o:spt="202" path="m,l,21600r21600,l21600,xe">
<v:stroke joinstyle="miter"/>
<v:path gradientshapeok="t" o:connecttype="rect"/>
</v:shapetype>
<v:shape id="Text Box 18" o:spid="_x0000_s1026" type="#_x0000_t202" style="position:absolute;margin-left:96.05pt;margin-top:50.55pt;width:19.2pt;height:15.35pt;z-index:251669504;visibility:visible;mso-wrap-style:square;mso-width-percent:0;mso-height-percent:0;mso-wrap-distance-left:9pt;mso-wrap-distance-top:0;mso-wrap-distance-right:9pt;mso-wrap-distance-bottom:0;mso-position-horizontal:absolute;mso-position-horizontal-relative:text;mso-position-vertical:absolute;mso-position-vertical-relative:text;mso-width-percent:0;mso-height-percent:0;mso-width-relative:page;mso-height-relative:page;v-text-anchor:top" o:gfxdata="UEsDBBQABgAIAAAAIQC2gziS/gAAAOEBAAATAAAAW0NvbnRlbnRfVHlwZXNdLnhtbJSRQU7DMBBF
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<v:textbox>
<w:txbxContent>
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<w:r w:rsidRPr="00F4625C">
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<w:sz w:val="14"/>
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<w:t>O
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</w:txbxContent>
</v:textbox>
</v:shape>
</w:pict>
</mc:Fallback>
</mc:AlternateContent>
</w:r>
etc
</w:p>
Parsed in 0.011 seconds, using
GeSHi 1.0.8.4
is tricky, unless you're able to decode (uudecode or base64decode?) the @gfxdata to get something useful.