The answer is actually 80 degrees, I just took the test.
Answer: unit
Step-by-step explanation:
Since Here Δ ABC is a isosceles triangle.
Also, and
Thus, ∠ ADH = 90°
That is, Δ ADH is the right angle triangle.
In which, AD = a unit and HD = b unit
And, By the definition of Pythagoras theorem,
⇒
⇒
Since, the perimeter of a triangle = sum of the all sides of the triangle.
Therefore, perimeter of ΔADH = AD + DH + AH
= unit
<u>The Answers</u>
The length of wire required to fence it: 176cm
4 times it can be fenced with 704cm of wire
is it true? if it is true, i can send you the solution
A'(5.5, -4.2), B'(7.5, -9.2), C'(3.5, -3.2)
hope it helped