trapezoid properties objective: discover properties of trapezoids
TRANSCRIPT
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Trapezoid Properties
Objective: Discover properties of trapezoids
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First of All:
• What is a trapezoid?
• a trapezoid is a quadrilateral with exactly one pair of parallel sides.
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Angles/Sides in a Trapezoid
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Consecutive Angles
Recall: Supplementary angles are two angles which add up to 180.
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Isosceles Trapezoid
• a trapezoid whose two nonparallel sides are the same length is called an isosceles trapezoid
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Line of Symmetry• There is one line of
symmetry for all trapezoids
• What points do you think this line of symmetry crosses through?
• The line of symmetry splits the trapezoid in half. Therefore, the line goes through the midpoints of the bases
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Base Angles of an Isosceles Trapezoid
x
ba
yx=y
a=b
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Diagonals
X
BA
Y
𝑋𝐵=𝐴𝑌
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Let’s Practice!
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Let’s Practice!
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Let’s Practice!
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Let’s Practice!