Question

Q . As shown in the figure, B1, B2, ..., B11 are eleven equidistant points lying on
straight line, in that order. Point A is chosen so that AB1B11 is an equilateral triangle.
A is joined to each of B1 to B11. Find the total number of acute-angled triangles in the given figure

The figure is attached above​

Answer 1

Step-by-step explanation:

The number of triangles in this figure is 10.

And also , they all are acute angles triangle.

So,

ANSWER☆

THERE ARE 10 ACUTE ANGLE TRIANGLES

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