Conditional: If a figure is a square, then it is a parallelogram. TRUE. Converse: If a figure is a parallelogram, then it is a square. FALSE (it could be a rectangle) Inverse: If a figure is not a square, then it is not a parallelogram. FALSE (it could be a rhombus, which is a parallelogram) Contrapositive If a figure is not a parallelogram, then it is not a square. TRUE Dec 19, 2019 · AB is parallel to DC and AD is parallel to BC 2. angle 1 = angle 2, angle 3 = angle 4 3. BD = BD 4. triangles ADB and CBD are congruent 5. AB = DC, AD = BC REASONS 1. Definition of parallelogram 2. If two parallel lines are cut by a transversal then the alternate interior angles are congruent 3. 4.
2. Write ‘True’ or ‘False’ for each of the following: (i) Every rhombus is a square. (ii) Every square is a rhombus. (iii) Every rhombus is a rectangle. (iv) Every rectangle is a rhombus. (v) Every rhombus is a parallelogram. (vi) Diagonals of a rhombus need not to be equal in length. (vii) Every parallelogram is a rectangle. ANSWERS 1.
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