Question

2. In Fig. 10,26, AB = BC = CA = 2a and segment
AD I side BC. Show that
А
B
D
с
Fig. 10.26
(1
) AD= a13, (ii) area of A ABC = 0? 13.
[Note. AD = a13 = AD' = 30.
So the result (i) above can be stated as under:
Three times the square on any side of an equilateral
triangle is equal to four times the square or the
altitude.]
2​

Answer 1

Step-by-step explanation:

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