QnD - The Early Symbols of Geometry

• "line segment A B"

• "ray A B"

• "line A B"

• it has no meaning

• "line Q R"

• "line segment Q R"

• "ray Q R"

• it has no meaning

• "line M P"

• "line segment M P"

• "ray M P"

• it has no meaning

• "ray C D"

• "ray D C"

• line CD

• it has no meaning

• "line segment W Z"

• "line W Z"

• "the length of line segment W Z"

• Points W and Z

• "plane W Z"

• "the length of line A W"

• "line segment A W"

• "the distance between A and W"

• "too bad"

• "plane A W"

• "angle P I"

• "angle I P"

• "angle P and I"

• "the measure of angle P I"

• it has no meaning

• "angle R A T"

• "the measure of angle R A T"

• "triangle R A T"

• "find the exterminators"

• "angle A"

• "the measure of angle E"

• "the measure of angle P E N"

• "the median of angle P E N"

• "the mean of angle P E N"

• "the mode of angle P E N"