Putuq nisqapaq musuqchasqapura wakin kaynin

 

{| {{prettytable}}

| <math>A \, =\, \frac{a+c}{2} \cdot h</math>

|----

| <math>h \, = \, b \cdot \sin\gamma = d \cdot \sin\delta</math>

|----

| <math>h \, = \, \frac{2}{c-a} \sqrt{s (s-(c-a)) (s-b) (s-d)}</math>, mit <math>s \, = \, \frac{(c-a)+b+d}{2}</math>

|---- valign="top"

| <math>e \, = \, \sqrt{a^2 + b^2 - 2\,a\, b\, \cos \beta} = \sqrt{c^2 + d^2 - 2\,c\,d\, \cos \delta}</math> <br />

<math>f \, = \, \sqrt{a^2 + d^2 - 2\,a\,d\,\cos\alpha} = \sqrt{b^2 + c^2 - 2\,b\,c\,\cos\gamma}</math>

|----

| <math>a,\,b,\,c,\,d</math>

|----

| <math>\alpha,\,\beta,\,\gamma,\,\delta</math>

|----

| <math>a+b+c+d</math>

|}