Six-points-A-B-C-D-E-and-F-are-placed-on-a-square-rigid-as-shown-How-many-triangles-that-are-not-right-angled-can-be-drawn-by-using-3-of-these-6-points-as-vertices-

Question Number 16940 by Tinkutara last updated on 28/Jun/17

Six points A, B, C, D, E, and F are

placed on a square rigid, as shown .

How many triangles that are not

right - angled can be drawn by using 3

of these 6 points as vertices ?

Commented by Tinkutara last updated on 28/Jun/17

Answered by ajfour last updated on 28/Jun/17

i could see only 4 such triangles .

Commented by Tinkutara last updated on 28/Jun/17

Can you explain ?

Commented by ajfour last updated on 28/Jun/17

△ DEC, △ AEF, △ ABF, △ BCD .

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