<h2><u><em>Yes, He Has That Correctly</em></u></h2>
I am almost positive that the answer is the first one.
The height of the triangular base of the pyramid is calculated through the equation,
h = (cos x)(18 in)
where h is height and x is half of the angle of the triangle. Since the triangle is equilateral, the value of x is 30°. Substituting,
h = (cos 30°)(18 in)
h = 15.59 in
Thus, the height of the base is approximately 15.59 inches.
Ask your self what is -2*?=23.
Then times that answer by 2.
Answer:
1.SAS, ASA,
2. Not congruent
3.C
4. If you could screenshot the whole page I can give tell you what it is.
