Question

Lines A and B are parallel lines. Find the measures of
angles 1, 2 and 3.
A
21 57°
22
33°
23
B+
a mzl=
b. m2 =
cm3 =
13)

Answer 1

Step-by-step explanation:

angle 3 = 57deg (alt. angles, //lines)

angle 2 = 180 - 57 - 33 = 90deg (angles in a triangle)

angle 1 = 180 - 90 - 57 = 33 deg (angles on a str line are supplementary)

Topic: angle properties

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