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38. <1 = , <2 = , <3 =

39. <1 = , <2 = , and <3 =

Step-by-step explanation:

38. Sum of angles in a triangle =

So that;

38 + 110 + <2 =

148 + <2 =

<2 = - 148

<2 =

Thus,

<1 = (alternate angle principle)

<3 =

Therefore;

<1 = , <2 = , <3 =

39. <2 = (alternate angle principle)

So that;

sum of angles in a triangle =

<1 + <2 + 81 =

<1 + + 81 =

<1 + 109 =

<1 = - 109

   =

<1 =

<3 =

<1 = , <2 = , and <3 =

29.5977692753

step-by-step explanation: