00:01
In this example, we're given two similar triangles, and we want to find the scale factor.
00:06
Okay, so my first triangle looks like this.
00:13
And note that these are not exactly to scale, but they are similar triangles, so they have the same angles.
00:20
And this is my second triangle.
00:23
So i'll say that angle equals this angle, these two angles are equal, and these two angles.
00:36
All right, and we have the sides of each triangle.
00:38
We have 15, 6, and 3 units.
00:42
And then here we have 28 and 4 units.
00:47
Okay, and we have four choices.
00:49
We have choice a.
00:51
3 over 4 is our scale factor.
00:53
Choice b is 4 over 5.
00:56
Choice c is 3.
01:00
And option d is just none of the above options or correct...