Question

First person to solve gets fan, medal, and help in another subject.

Answer 1

You might want to watch this short video about this topic:

https://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-geometry-topic/cc-6th-area-shapes-grid/v/area-of-triangle-in-grid

Answer 2

heights 2 base is 1 1/2?

Answer 3

or 3 1/2 I can't tell

Answer 4

I don't see on the diagram you've shared that the height is 2; how did you obtain that?
Have you watched the video?

Might want to try this one specifically & get some practice from it:

https://www.khanacademy.org/math/basic-geo/basic-geo-area-perimeter/basic-geo-area-perimeter-polygon/e/area-of-triangles-2

Answer 5

I watched the video... It's hard to tell with the lines that way..

Answer 6

but that's exactly what you are facing in your current post.

What did you learn from the video?
What theorem (if any) did the video suggest you use for finding the area of this triangle if you know the lengths of the 3 sides?

Answer 7

Note that there are 2 or 3 different ways in which you could find the area of this triangle. Please see the discussion in


http://www.regentsprep.org/regents/math/algtrig/att13/areatrigResource.htm

Answer 8

Note that if you apply what you learned in our previous discussion, you could find the lengths of all three sides of the given triangle.

Sorry, I need to get off the 'Net.