Option A
Number of triangles are ABC, ADC, ADB, BDC, DOC, COB, BOA, AOD, DOE, EOC, AOF, FOB, DOG, COH, AOG, BOH.
Total: 16
No. of Straight lines: AB, BC, CA, AD, AE, GD, GC, DF = 8
No. of Triangles: ABC, ABD, ADE, AEC, ABE, ADC, AGC, BGC, BGD, DGC, GDH, HDI, GDI, DIE, IEC, DIC, AIC, AIJ, JIC, AGI, AGH, AHI = 22
NA
NA
NA
Total Number of triangles:
From the Vertex A: ABC, AJF, AKE, ALD
From the Vertex B: BIJ, BHK, BGL
From the Vertex C: CGF, CHE, CID
In quad BJFC: there are 7 small triangles
In quad KEJF: there are 4 Small triangles
In quad KELD: there are three triangles
Total triangles 24.
Number of Triangle are ABG, AJC, EFD, DIB, AIH, EIJ, BJF, CFG, DGH, JFG, IJG, HJG, IOH, IOJ, IOG, HOG.
Total: 19
The total number of triangles present in the above figure is 20
TOTAL NUMBER OF QUADRILATERALS = 17
There are total 24 triangles. The way to count the triangles of the figure is to draw the figure and count.
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