Question

A,B,C,D,E,F,G I Need Some One To Help Me (FAN+MEDAL)
A student wrote the following sentences to prove that parallelogram ABCD has two pairs of opposite sides equal.

For triangles ABD and CDB, alternate interior angle ABD is congruent to angle CDB because AB and DC are parallel lines. Similarly, alternate interior angle ADB is equal to angle CBD because AD and BC are parallel lines. DB is equal to DB by reflexive property. Therefore, triangles ABD and CDB are congruent by SAS postulate. Therefore, AB is congruent to DC and AD is congruent to BC by CPCTC.

Answer 1

Which statement best describes a flaw in the student's proof?

Angle ADB is congruent to angle CBD because they are vertical angles.

Angle ADB is congruent to angle CBD because they are corresponding angles.

Triangles ABD and CDB are congruent by SSS postulate.

Triangles ABD and CDB are congruent by SAS postulate.

Answer 2

@Hero

Answer 3

help me help you

Answer 4

oK

Answer 5

First i thought it was D , but now im starting to think its either a b or c

Answer 6

What is the difference between a contact force and a distance force?

Answer 7

... I'm not sure :(

Answer 8

but by context clues. contact force would either have to meet or connect to contact , then distance must be separated or further

Answer 9

im not eather

Answer 10

Oh Ok

Answer 11

I think the answer is
D again though

Answer 12

I'm going to fan n medal you, you can do the same for me if you want to

Answer 13

it is d or c

Answer 14

Ok ty