Question

Can anyone help me with proofs.?

Answer 1

yeah sure why not....

Answer 2

Statements
Justifications

In triangles APD and BPC; DP = PC
Sides of equilateral triangle DPC are equal

In triangles APD and BPC; AD = BC
Sides of square ABCD are equal

In triangles APD and BPC; angle ADP = angle BCP
Angle ADC = angle BCD = 90° so angle ADP = angle BCP = 60°

Triangles APD and BPC are congruent
SAS postulate

Answer 3

whats the error

Answer 4

i dont get it what do u want me to prove and what is given?

Answer 5

oh ok...wait...

Answer 6

first justification,is it already given that DPC is an equilateral triangle?

Answer 7

no

Answer 8

2nd justification is it already given that ABCD is a square?

Answer 9

You know, i don't really find anything wrong with your justification!

Answer 10

3rd justification,is it already given that Angle ADP and Angle BCP are of measure 90 degrees?

Answer 11

He writes the measure of angles ADP and BCP as 60° instead of 45°.

He uses the SAS postulate instead of AAS postulate to prove the triangles congruent.

He writes the measure of angles ADP and BCP as 60° instead of 30°.

He uses the SAS postulate instead of SSS postulate to prove the triangles congruent.

Answer 12

what/who is 'he'?

Answer 13

are these options?

Answer 14

yes

Answer 15

is it given that ABCD is a square?

Answer 16

im pretty sure thats known

Answer 17

ok then the justification 3 is wrong as angle ADP,angle BCP cant be 90 as ADC is 90 and angle PDC is 60 so angle ADP is 30 similarly BCP is also 30

Answer 18

He writes the measure of angles ADP and BCP as 60° instead of 30°.but u used 90 so idk