Mathematics, 13.11.2020 05:50 batista68
Terra writes the following proof for the theorem: If the diagonals of a quadrilateral bisect each other, the quadrilateral is a parallelogram:
Terra's proof
1. AO = OC because it is given that diagonals bisect each other.
2. BO = OD because it is given that diagonals bisect each other.
3. For triangles AOB and COD, angle 1 is equal to angle 2. as they are
4. Therefore, the triangles AOB and COD are congruent by SAS postulate.
5. Similarly, triangles AOD and COB are congruent.
6. By CPCTC, angle ABD is equal to angle BDC and angle ADB is equal to angle DBC.
7. As the alternate interior angles are congruent, the opposite sides of quadrilateral ABCD are parallel.
8. Therefore, ABCD is a parallelogram.
Which is the missing phrase in terras proof ?
Answers: 3
Mathematics, 21.06.2019 19:00
Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).
Answers: 1
Mathematics, 22.06.2019 00:00
At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?
Answers: 1
Mathematics, 22.06.2019 00:00
Answer asap! show all work! find the number of complex roots, the possible number of real roots and the possible rational roots of the polynomial function. then, solve for all roots. x^3 + 2x^2 + 3x + 6 = 0
Answers: 1
Mathematics, 22.06.2019 01:10
If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.
Answers: 2
Terra writes the following proof for the theorem: If the diagonals of a quadrilateral bisect each ot...
Biology, 26.10.2021 19:30
Geography, 26.10.2021 19:30
History, 26.10.2021 19:30
Engineering, 26.10.2021 19:30
Social Studies, 26.10.2021 19:30
Mathematics, 26.10.2021 19:30
Business, 26.10.2021 19:30
Mathematics, 26.10.2021 19:30