6.2 is not a whole number
150/3 = 50 = a whole number
25 and 13 are whole numbers.
Answer:
21
Step-by-step explanation:
<h2>
Answer:</h2>
C= equilateral triangle
<h2>
Step-by-step explanation:</h2>
To find this answer we need to know what a cube is. A cube is a prism whose sides all have the same length. It's something like the three dimensional version of a square. In the figure below, we have labeled each length of the cube as
. Also, the vertex we taken is in blue color, so we need to find each side length of the triangle. Since the cross section passes through the midpoints of three edges that intersect at the same vertices of the cube, then:

Since this is a cube, then it is true that:

<em>Since the side lengths have the same value, this is an equilateral triangle.</em>
Since you want to use the SAS theorem, you must find sides that are either side of angles BAC and DAE. You have already made use of sides AE and AC, so the other sides you need to choose are AB and AD. The appropriate relationship for similarity is ...
... AD = 2AB
since you want the sides of triangle ADE to be twice then length of those in triangle ABC.