Page:An introduction to linear drawing.djvu/65

 ﻿QUESTIONS

RXLATI5G TO

PART 1.

FIRST CLASS.

1.	What do the first class draw ?

2.	What is a right line ?

3.	How may you ascertain whether a line be straight ?

4.	To cut a right line into four parts or quarters, what must you first cut it into ? (Ans. halves.)

5.	To cut a right line into eight parts, how must you proceed ? Ans. Cut it into halves and quarters.

6.	What is a horizontal line ?

7.	WThat is a perpendicular line ?

8.	In making horizontal lines what must you ob- serve ?

9.	In drawing perpendicular lines what must you ob- serve ?

10.	What are parallel lines ?

11.	What are oblique lines ?

12.	What is an angle ? (page 4.J

13.	What is the point or apex of an angle ?

14.	Is it the length of the sides of an angle or the width of the opening that determines the size of the angle ?

15.	When do two lines form a right angle ? Ans. When the two sides are perpendicular to each other.

16.	What is an acute angle ? Ans. One that is less than a right angle.

17.	What is an obtuse angle ? Ans. One that is more — larger than a right angle.