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Triangle Relations and Inequalities 2
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Result
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Complete the two-column proof by identifying the reason that supports each statement. Type the letter of your answer.

Given:   isosceles ΔISO with IS ¯ ≅ SO ¯
Prove:   IC<CO
Choices:
a. Angle-Side Inequality Theorem
b. Hinge Theorem
c. m∠CSI<m∠OSC
d. Given
e. Reflexive Property of Segment Congruence
f. Definition of inequality between angles
g. Converse of Hinge Theorem
h. Definition of congruent angles

Proof:
Statements Reasons
1.
IS ¯ ≅ SO ¯
m∠OSC=60°
m∠ISC=40°
1.
2.
m∠ISC<m∠OSC
2.
3.
CS ¯ ≅ CS ¯
3.
4.
IC<CO
4.
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