### Façade of the Giraud Palace, Rome

In the Giraud Palace and the great Palazzo della Cancelleria, pilasters appear in the external composition,…

### Section of Fortified Wall

"Section of Fortified Wall. (Interior on the left; exterior on the right.) a, a, is the abatis; b, b,…

### Kaid Bey Mosque

"Exterior view of Kaid Bey Mosque, Cairo." — Encyclopedia Britanica, 1893

### Left Semilunar

A view of the left semilunar from the external surface.

### Parallel Lines Cut By A Transversal

Illustration showing that when two parallel lines are cut by a transversal, the exterior-interior angles…

### Exterior Angle Proof

Illustration used to prove "An exterior angle of a triangle is equal to the sum of the two remote interior…

### Sum of Exterior Angles of a Polygon Proof

Illustration used to prove "If the sides of any polygon are prolonged in succession one way, no two…

### Sum of Interior Angles of a Polygon Proof

Illustration used to prove "The sum of all the angles of any polygon is twice as many right angles as…

### Exterior Angle Bisector of Triangle Dividing Opposite Side Into Proportionate Segments

Illustration to show that a bisector of a an exterior angle of a triangle divides the opposite side…

### Screw Propeller Ship, Diagrammatic View of the Hull

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding…

### Screw Propeller, Cross Section of a Blade

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding…

### Screw Propeller, Sectional Elevation

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding…

### Screw Propeller, Side Elevation

"A propeller acting on the principle of the screw, attached to the exterior end of a shaft protruding…

### Clapboard Siding

Clapboard or bevel siding is the horizontal and overlapping style of laying board on the exterior of…

### Bisector of an Exterior Angle of an Isosceles Triangle

Illustration to show that the bisector of an exterior angle of an isosceles triangle, formed by producing…