Q46 of 78 Page 23

Write down fifteen angles (less than 180°) involved in Fig. 2.28.

The fifteen angles (less than 180°) involved in the figure:

∠ EAD, ∠ AEF, ∠ EFD, ∠ ADF, ∠ DFC, ∠ DCF, ∠ CDF, ∠ BEF, ∠ BFE, ∠ EBF, ∠ FBC, ∠ FCB, ∠ BFC, ∠ ABC, and ∠ ACB.

State the mid points of all the sides of Fig. 2.26.

Name the vertices and the line segments in Fig. 2.27.

Name the following angles of Fig. 2.29, using three letters:

(a) ∠1

(b) ∠2

(d) ∠1 + ∠2

(e) ∠2 + ∠3

(f) ∠1 + ∠2 + ∠3

(g) ∠CBA – ∠1

Name the points and then the line segments in each of the following figures (Fig. 2.30):