Page:An introduction to linear drawing.djvu/66

 ﻿18. What is a triangle ? (page b.)

19.	What is the base of a triangle ?

20.	What is the apex of a triangle ?

21.	What is the height of a triangle ?

22.	What is an Isoceles triangle ?

23.	What is an Equilateral triangle ?

24.	What is a Scalene triangle ?

25.	When a perpendicular is raised on a right line, must the right line be a horizontal ? Ans. No. A perpendicular may be raised on any right line whether horizontal or oblique.

26.	What is a rectangular or right angled triangle ?

27.	What is a rectangular isoceles triangle ?

28.	What is a rectangle ? (page 6.)

29.	What is the base of a rectangle ?

30.	What is the height of a rectangle ?

31.	What is a parallelogram ?

32.	Has a parallelogram any right angles ?

33.	What angles has a parallelogram ? Ans. Two acute, and two obtuse.

34.	What is the height of a parallelogram ?

35.	How are the sides of a square ?

36.	How are the angles of a square ?

37.	When are angles said to be parallel ? Ans. When their openings and points are parallel.

38.	How are the sides of a Rhomb or Lozenge ?

39.	How are the angles of a Rhomb ?

40.	How do you proceed to draw a Rhomb ?(page 9.)

41.	What part of a circle does a right angle form ?

42.	If a right angle be cut into two equal parts, what part of a circle will each of these parts be ? (page 9.)