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Presentation transcript:

Geometry/Trig Name __________________________ 4-4 Isosceles Δ Notes Date ___________________________ Review: Definition of Isosceles Triangle: ______________________________________________________ _______________________________________________________________________________ Theorem: _____________________________________ Theorem: _____________________________________ So, ____________________ So, ____________________ Review: Solve for x Ex.1) Ex.2) 82° 2x + 1 4x - 6 x° 5x - 10 Algebra Example 4: Given ABC is an isosceles triangle. Solve for x and each angle. A B C x = _____ mA = _____ mB = _____ mC = _____ 3x + 2 x + 4

Proof Example 2: Diagram: Given: _______________________ Proof of Theorem: Diagram: Given: _____________________________ Prove: _______________________ Statements Reasons __________________________________ __________________________________ Proof Example 1: Diagram: Given: _______________________ Prove: _______________________ Statements Reasons __________________________________ 3. __________________________________ 4. __________________________________ __________________________________ 3. __________________________________ 4. __________________________________ Proof Example 2: Diagram: Given: _______________________ Prove: _______________________ Statements Reasons __________________________________ __________________________________