Given: RSTV is a quadrilateral. A, B, C, and D are midpoints of sides \overline{RS}, \overline{ST}, \overline{TV}, and \overline{VR}, respectively. Proof: ABCD is a parallelogram. Proof:
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To prove that ABCD is a parallelogram, we need to show that opposite sides are parallel. Show more…
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If sides $\overline{A B}$ and $\overline{D C}$ of quadrilateral $A B C D$ are parallel, which additional information would be sufficient to prove that quadrilateral $A B C D$ is a parallelogram? $\mathbf{A} \overline{A B} \cong \overline{A C}$ $\mathbf{C} \overline{A C} \cong \overline{B D}$ $\mathbf{B} \overline{A B} \cong \overline{D C}$ $\mathbf{D} \overline{A D} \cong \overline{B C}$
Quadrilaterals
Tests for Parallelograms
5.2 In the diagram below, ABCD is a quadrilateral. E is a point on AD so that AE = AB and EC = CD. BEC = 90". AD || BC. Let D = 2x and B₁ = x. 5.2.1 Determine the value of x. 5.2.2 Prove that ABCD is a parallelogram.
Josie R.
The vertices of a quadrilateral ABCD are ? = [0,3,5], B= [4, −3,15] and D= [7,1,3] Prove that ABCD is a parallelogram.
Hoan N.
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