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Isosceles Triangle Exploration
 

Isosceles Triangle Exploration

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Classroom notes for 8th grade pre-algebra class.

Classroom notes for 8th grade pre-algebra class.

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    Isosceles Triangle Exploration Isosceles Triangle Exploration Presentation Transcript

    • Isosceles Triangle A B C
    • Isosceles Triangle with a Perpendicular Bisector A B C D
    • Isosceles Triangle with a Perpendicular Bisector A B C D
    • Isosceles Triangle with a Perpendicular Bisector Congruent side markings Perpendicular angle markings A B C D
    • Isosceles Triangle with a Perpendicular Bisector Congruent side markings Perpendicular angle markings What else do we know? A B C D
    • Isosceles Triangle with a Perpendicular Bisector
      • What else do we know?
        • perpendicular bisector
      A B C D
    • Isosceles Triangle with a Perpendicular Bisector
      • What else do we know?
        • perpendicular bisector
        • side congruent to itself
      A B C D
    • Isosceles Triangle with a Perpendicular Bisector
      • What else do we know?
        • perpendicular bisector
        • side congruent to itself
        • all sides are congruent so Δ ABD= Δ ACD!
      A B C D
    • Isosceles Triangle with a Perpendicular Bisector If the two triangles are congruent, what else do we know? A B C D
    • Isosceles Triangle with a Perpendicular Bisector If the two triangles are congruent, what else do we know? <A = <C <BAD = <CAD All of its parts, angles and sides are congruent! A B C D
    • Isosceles Triangle with a Perpendicular Bisector A B C D You’ve used geometric reasoning to figure out more information about Δ ABC and its bisector !