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A parallelogram has two pairs of equal sides ... The sum of interior angles in a quadrilateral is 360°. This fact and the properties of quadrilaterals can be used to calculate angles.
CBSE Class 9 Maths Extra Questions: Chapter 9 - Areas of Parallelograms and Triangles (with Answers)
CBSE: Extra questions on Chapter 9 - Areas of Parallelograms and Triangles (for CBSE Class 9 Maths exam 2020-21) are available here. These NCERT based extra questions are important for the ...
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