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A regular octagonal pyramid of base side equal to 6 cm is resting on its octagon face on ground and the section is coinciding with the edge of base and cutting solid with an angle with base equal to 45 degrees the section will be _________________

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A regular octagonal pyramid of base side equal to 6 cm is resting on its octagon face on ground and the section is coinciding with the edge of base and cutting solid with an angle with base equal to 45 degrees the section will be _________________

(a) Triangle

(b) Trapezium

(c) Irregular Octagon

(d) Octagon

I had been asked this question by my college director while I was bunking the class.

My question is from Sections of  Pyramids in portion Section of Solids of Engineering Drawing

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Correct option is (c) Irregular Octagon

The explanation: Given a regular octagonal pyramid it may of any size having any distances in between them if a section plane cutting the solid coincides with base edge and cutting pyramid gives an irregular octagon and similar to other based pyramids also.

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