Question

what is the area of this kite?

Answer 1

u can think of the top two triangles as one, same goes for the bottom two

Answer 2

u wud just get 2 rectangles, they're areas are easy to find

Answer 3

get the area of the triangles, and sum them up
keep in mind that the area of a triangle is 1/2 base * height

Answer 4

a = 1/2 2 x 20 ?

Answer 5

as i said, there are two triangles with the same dimensions, so when combined, the area of the two triangles wud just be 2 x 20

Answer 6

but the area of a triangle is 1/2 b x h? Wouldn't i need the 1/2

Answer 7

yea thats for one triangle yea? but there are two of them, so u have to multiple 1/2 b x h by two which simplifies to just b x h

Answer 8

I would suggest what @11calcBC had said because as you can see that there are two triangles, it wouldn't be necessary to do another computation after calculating 1/2 of b times h.

Answer 9

\[\Delta area = \frac{ 1 }{ 2 }(b \times h)\]
\[\Delta area = \frac{ 1 }{ 2 }(2 \times 10) = \frac{ 1 }{ 2 }(20)=10 \]
Since there are two triangles, you do 10*2=20 that's why you don't necessarily need to calculate half when there are two congruent triangles.

Answer 10

You can do the same for the bottom two triangles also.

Answer 11

Oh okay okay i understand know i was totally lost but not i got it! Heehe thank you guys so much (づ￣ ³￣)づ ♥

Answer 12

You're welcome :)