Calculate the discount and selling price. Marked Price
Discount
Amount of Discount
Selling Price
1. $100
12%
2. $75
20%
3. $60
25%
4. $72.80
15%
5. $150
8%
6. $980
12/2%
7. $24.98
1623%
8. $47.70
33/3%

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.