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From Karnataka Open Educational Resources
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==Concept # 4. Isosceles trapezium==
 
==Concept # 4. Isosceles trapezium==
 
===Learning objectives===
 
===Learning objectives===
# A trapezium in which non-parallel sides and base angles are equal is called as an Isosceles Trapezium.
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# A trapezium in which non-parallel sides are equal is called as an Isosceles Trapezium.
 
# The diagonals of an isosceles trapezium are equal.
 
# The diagonals of an isosceles trapezium are equal.
# Area of isosceles trapezoid is given by<math>(a+b)/2 X h</math> , where a and b are the lengths of the parallel sides and h is the distance (height) between the parallel sides.
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# An isosceles trapezium has one line of reflection symmetry. This line connects the midpoints of the two bases.
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# Both pairs of base angles of an isosceles trapezium are congruent.
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# Pairs of angles in an isosceles trapezium that do not share a base are supplementary.
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# Area of isosceles trapezium is given by<math>(a+b)/2 X h</math> , where a and b are the lengths of the parallel sides and h is the distance (height) between the parallel sides.
    
===Notes for teachers===
 
===Notes for teachers===
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