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    "# Practice Problems\n",
    "### Lecture 23\n",
    "Answer each number in a separate cell\n",
    "\n",
    "Rename the notebook with your lastName, first inital and the lecture \n",
    "    \n",
    "    ex. Cych_B_23\n",
    "    \n",
    "Turn this notebook into Canvas"
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    "## 1. Great circles\n",
    "- Someone measured the strike and dip of a plane to be 333 and 42$^{\\circ}$ NE.   \n",
    "- Calculate the dip direction and the pole to the plane from the strike and dip.  \n",
    "- Plot the trace of the plane on an equal area net.   \n",
    "\n",
    "\\[Hint: look at Lecture 21 for how strike and dip works.\\]\n",
    "\n",
    "\n",
    "## 2. Small circles\n",
    "- Someone measured a bunch of geomagnetic directions with a mean inclination of 33 $^{\\circ}$ declination of 12$^{\\circ}$ and a circle of 95% confidence of 15$^{\\circ}$.  \n",
    "\n",
    "- Plot the mean direction as a solid red triangle in an equal area diagram\n",
    "- Plot the circle of confidence as blue dots\n",
    "- Calculate the antipode of the mean direction (the direction 180$^{\\circ}$ away with the opposite inclination).\n",
    "- Plot the antipode as a white triangle with a black edge. "
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