Question

find each one of the lettered angles giving reasons : on co-interior angles
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Answer 1

Answer:

110+b=180 ( co- interior angles)

b=70°

b+a=180. ( co-interior angle)

70+a=180

a=110°

Answer 2

Answer:

b=70

a=120

Step-by-step explanation:

angel MST+angle RST= 180 ( angle sum property)

angel MST+110=180

angel MST= 180-110

angel MST= 70

angel MST=angel QTS

70=b

angel MPQ= angel MRQ ( angel opposite of a

parallelogram are equal)

60=angel MRQ

angel MRQ+angel PQX = 180 (Sum of

substitutional angle)

60+a= 180

a=180-60

a=120

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