Tom drew this shape on grid paper.
Which one of the shapes below when joined to Tom's shape without an overlap, will not make isosceles triangle?
| A. |  |
B. |  |
C. |  |
D. |  |
Show Worked Solution
\(\text{An isosceles triangle has two sides of the same length.}\)
\(\text{Option C will form a scalene triangle (all sides different lengths).}\)
\(\Rightarrow C\)