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Mon 27 Mar, 2006 06:11 pm
Prove: If the base angles of a triangle are congruent, then the triangle is isosceles.
Task A
Draw and label a diagram that includes:
A triangle with each vertex and the given information labeled.
All other information needed to present the proof.
Task B
Construct a formal proof of the theorem including:
Given statement(s)
Other statements
A reason for each step.
A conclusion that restates the theorem.
Hint: Draw the altitude, then show that the two smaller triangles are congruent.
Wow, is this for HS? They still do proofs in Geometery? I wish I could help, but I forgot all of the names for the rules.
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