(Rhombus.) Construction:

Draw base line of desired length.

Using the hypotenuse of a 60o triangle (or any angle) draw sides of rhombus equal to base line, measuring with ruler. Draw top line parallel to base line, using ruler. Cut out figure with scissors.

Let pupils write their names in the middle of the cards. Teach elements of quadrilateral parallelograms, - that is, Rhombus has four equal sides, and two opposite angles equal. Contrast with square. Material: Bristolboard.

No. 2. Visiting-Card. Rectangle. Construction

With ruler draw line A B, 3½".

With triangle draw lines AD and BC at right angles to A and B. Measure AD and BC, 1½". With ruler draw DC parallel to AB.. Test angles with triangle. Cut card with scissors.

Drill concepts of oblong (rectangle) contrasting with square. Materials: Bristol or tagboard.

No. 6. Visiting Card. (Rhomboid.) Construction

Draw base line of desired length.

Using the hypotenuse of a 60o triangle draw sides of rhomboid of desired length, measuring with ruler. Draw top line with ruler and parallel to base line. Let pupils write their names in the middle of the cards. Teach elements of quadrilateral parallelograms, as in preceding lesson. Contrast with rectangle and rhombus. Material: Bristolboard.