Question

An altitude is drawn from the vertex of an isosceles triangle, forming a right angle

Answer 1

Answer:

• 54 in

Step-by-step explanation:

Use Pythagorean to find the missing side x of the triangle.

It is a hypotenuse with other sides 18 in and half of 15 in:

• $x = \sqrt{18^2+(15/2)^2} =\sqrt{380.25} =19.5$

The perimeter is:

• P = 2*19.5 + 15 = 54