Question

If m<5=53º and m∠7=125º, find the measures of each numbered angle.

m<1=

m<2=

m<3=

m<4=

m<6=

Answer 1

#5 = 53° #7 = 125° #6 = 55° #2 = 72° #3 = 55° #1 = 53° #4 = 127°

triangle = 180° 

alternating interior angles are the same (#6 & #3 and #5 and #1) 

#3 and #7 should equal 180° 

#1 and #4 should also equal 180° 

#6 and #7 should equal 180° 

#4 and #5 should equal 180°