When it's a right triangle, its the long piece that isn't a part of the legs of the right angle.
Find the percentage change: The price was $60. Now it is $40.
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Observe the figure given.
Given: ABCD is a parallelogram.
To prove: ABCD is a rhombus
Statement
1. ABCD is a parallelogram. AC bisects .
Reason: Given
2.
Reason: Definition of an angle bisector
3.
Reason: Reflexive property of congruence
4.
Reason: ASA Postulate
5.
Reason: corresponding parts of congruent triangles are equal.
6.
Reason: Opposite sides of the parallelogram are congruent.
7.
Reason: Transitive property of congruence
8. ABCD is a rhombus
Reason: Definition of rhombus