Page:An introduction to linear drawing.djvu/65

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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.