77
134. Depressed surface 77
135. Shading raised surfaces 78
136. Shading depressed surfaces 78
137. Plain cubical outline 79
138. Indicating cube 79
139. Confused lines 79
140. Heavy horizontal lines 80
141. Heavy vertical lines 80
142. Isometric cube 81
143. Cube and circle 81
144. Flattened perspective 82
145. Angles in isometric cube 83
146. Plain circle 84
147. Sphere shading 84
148. Drawing regular ellipse 86
149. Drawing irregular ellipse 88
150. Drawing spiral 89
151. Abscissa 90
152. Angle 91
153. Apothegm 91
154. Apsides, or apsis 91
155. Chord 91
156. Convolute 91
157. Conic sections 91
158. Conoid 91
159. Cycloid 91
160. Ellipsoid 91
161. Epicycloid 91
162. Evolute 91
163. Focus 91
164. Gnome 91
165. Hyperbola 91
167. Hypothenuse 91
168. Incidence