### Rectangle

Illustration of a rectangle, which is a parallelogram with all angles right angles.

### Rhomboid

Illustration of a rhomboid, which is a parallelogram which has its angles oblique angles.

### Rhombus

Illustration of a rhombus, which is a rhomboid with all sides equal.

### Series Multiple Connection

"Diagram of a series multiple connction. Two sets of cells are connected in series, and the two batteries…

### Lateral Sliding Contact

The lines of contact are equal, but the axes are neither parallel to each other, or the line of contact.

### Square

Illustration of a square, a rectangle with all sides equal.

### Square With Diagonals and Lines Drawn

Illustration showing a square with diagonals, lines, and parallel lines

### 2 Lines Cut By A Transversal

Illustration of two straight lines, m and n, cut by a transversal t.

### 2 Lines Cut By A Transversal

Illustration of two straight lines, AB and CD, cut by a transversal EF.

### Triangle With Bisector Parallel to the Base

Illustration of a triangle showing that when a line parallel to the base of a triangle bisects one side,…

### Triangle With Bisectors of Base Angles

Illustration to show if the bisector of the base angles of a triangle are drawn, and through their point…

### Parallelopiped Divided Into Triangular Prisms

Diagram used to prove the theorem: "The plane passed through two diagonally opposite edges of a parallelopiped…