B 3
4
2
D
C
Melissa writes the following proof for the theorem: If the diagonals of a quadrilateral bisect each other, the quadrilateral is a parallelogram:
Melissa's proof
BO
3. The
1. For triangles AOB and COD, angle 1 is equal to angle 2, as they are vertical angles.
2. AO =
and BO = OD because it is given that diagonals bisect each other.
are congruent by SAS postulate.
4. Similarly, triangles AOD and COB are congruent.
5. By CPCTC AB is equal to DC
6. By CPCTC, AD is equal to BC
7. As the opposite sides are congruent, the quadrilateral ABCD is a parallelogram.
Which is the missing phrase in Melissa's proof?

quit

step-by-step explanation:

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

i dont understand

step-by-step explanation: