SUPPLEMENTARY ANGLES

2-Angles that add up to 180 degrees

COMPLEMENTARY ANGLES

2-Angles that add up to 90 degrees.

VERTICAL ANGLES

VERTICAL ANGLES ARE CONGRUENT <4=<2 AND

<1=<3

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PARALLEL LINES

<1=<5 Corresp.<s <3=<6 Alt. int. <s<3=<7 Corresp. <s <4=<5 Alt. int. <s<2=<6 Corresp.<s <2=<7 Alt. Ext. <s<4=<8 Corresp.<s <1=<8 Alt. Ext. <s<3 + <5= 180 Same side int. <s<4 + <6= 180 Same side int. <s

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SUPPLEMENTARY ANGLES

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