Question 1210148
.


The wording is specially intended to confuse a reader.


Normal wording should say


<pre>
    There are three points in a coordinate plane, 
    A at ((0,0), B at (1,0) and C at (1,1).
    Find the area of triangle ABC.
</pre>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<U>S O L U T I O N</U>


<pre>
Triangle ABC is a right angled triangle.


It has horizontal leg AB of the length 1 and vertical leg BC of the length 1.


Triangle ABC is a right angled triangle.


Its area is half-product of its legs  {{{(1/2)*AB*BC}}} = {{{(1/2)*1*1}}} = {{{1/2}}} square units.    <U>ANSWER</U>
</pre>

Solved.



In the form how the problem is worded and presented in the post, 
is is not a mathematical style of writing.