Angles and Transversal lines Advanced Learning Target 2: I can use informal arguments to establish facts about angles and lines.

Two Lines Intersected by Transversal Alternate Interior Angles These angles are Congruent

Two Lines Intersected by Transversal Alternate Exterior Angles Alternate Exterior Angles These angles are Congruent

Two Lines Intersected by Transversal These angles are Supplementary Same-Side Interior

Two Lines Intersected by Transversal These angles are Supplementary Same-Side Exterior Same-Side Exterior

Two Lines Intersected by Transversal Corresponding Angles Corresponding Angles

Carnegie 10.3 # 8-Alt. Int. Angles Which Angle is an Alternate Interior Angle?

Carnegie 10.3 #19 X° 80° 100° X- 20° 80° 100° 100° 80° 100° 80° Determine all the measures. So we know that X- 20° + X° = 180 ° Then combine like terms so we now have 2X- 20°= 180 ° Then add 20 to both sides 2X= 200 ° Then divide by 2 X= 100 ° Now we can fill in our missing angles 80° 100° X- 20° X° 100° 80° 100° 80° 100° 80°

Continue Working on 10.3 Homework # 2-6,9,10,12,18,20