Could anyone help me with this 3D figure proof?
I don't care if its a paragraph proof, a flow proof, or a 2 column proof, whatever floats your boat =D
Thanks,
DisturbedPanda
Hello, disturbedpanda!
$\displaystyle \begin{array}{cccc}
1. & CR = CS & & \text{Given} \\
2. & QC \perp CR & & \text{Given} \\
3. & QC \perp CS & & \text{Given} \\
4. & \angle QCR = \angle QCS & & \text{d{e}f. of perp.} \\
5. & QC = QC & & \text{Identity} \\
6.& \Delta QCR \cong \Delta QCS & & \text{s.a.s.}\end{array}$