Question

Why is the area of a quadrilateral the product of the two diagonals times the sine of their included angle?

score 2.2k · Answer 1 · 2020-01-23 21:19:03

2.2k

Views

Why is the area of a quadrilateral the product of the two diagonals times the sine of their included angle?

Published on 23 Jan 2020 - 21:19

score 134 · Answer 2 · 2020-02-01 01:02:44

134

Views

Is there any better way to solve this geometric area problem?

Published on 01 Feb 2020 - 1:02

score 320 · Answer 3 · 2020-02-02 17:10:32

320

Views

$\angle BAC=25$, $\angle BCA=20$, $\angle BDC = 50$, $\angle BDA = 40$, $AC$ and $BD$ intersect at $P$, what is $\angle CPD$?

Published on 02 Feb 2020 - 17:10

score 170 · Answer 4 · 2020-02-06 07:44:38

170

Views

Solve irregular quadrilateral with all sides and one outer angle

Published on 06 Feb 2020 - 7:44

score 325 · Answer 5 · 2020-02-16 09:19:10

325

Views

Area of triangles inside quadrilateral.

Published on 16 Feb 2020 - 9:19

score 241 · Answer 6 · 2020-02-18 06:46:43

241

Views

Area of a quadrilateral inside a right angled triangle

Published on 18 Feb 2020 - 6:46

score 326 · Answer 7 · 2020-02-18 16:15:59

326

Views

Prove if parallelogram law worked in a quadrilateral that shape is parallelogram

Published on 18 Feb 2020 - 16:15

score 182 · Answer 8 · 2020-02-18 19:37:13

182

Views

Isosceles trapezoid and similar triangles

Published on 18 Feb 2020 - 19:37

score 1.3k · Answer 9 · 2020-02-21 10:33:58

1.3k

Views

Extending the Law of Cosines formula to quadrilaterals (and even polygon?)

Published on 21 Feb 2020 - 10:33

score 99 · Answer 10 · 2020-03-01 16:43:23

99

Views

Area of a parallelogram using similar triangles

Published on 01 Mar 2020 - 16:43

score 246 · Answer 11 · 2020-03-02 22:16:27

246

Views

Distance between mid point of two sides of a quadrilateral

Published on 02 Mar 2020 - 22:16

score 64 · Answer 12 · 2020-03-10 16:18:59

64

Views

Proving that the quadrilateral ATPQ is cyclic

Published on 10 Mar 2020 - 16:18

score 77 · Answer 13 · 2020-03-12 16:45:48

77

Views

Circumcircle of a square and an arbitrary point inside it; prove: $|A_1B_1|\cdot|C_1D_1|=|A_1D_1|\cdot|B_1C_1|$

Published on 12 Mar 2020 - 16:45

score 80 · Answer 14 · 2020-03-13 12:34:46

80

Views

Prove that $FG$ is tangent to a fixed circle.

Published on 13 Mar 2020 - 12:34

score 92 · Answer 15 · 2020-03-16 19:31:42

92

Views

Prove the orthogonal projections of $S$ form a tangent quadrilateral

Published on 16 Mar 2020 - 19:31

List Question

Why is the area of a quadrilateral the product of the two diagonals times the sine of their included angle?

Is there any better way to solve this geometric area problem?

$\angle BAC=25$, $\angle BCA=20$, $\angle BDC = 50$, $\angle BDA = 40$, $AC$ and $BD$ intersect at $P$, what is $\angle CPD$?

Solve irregular quadrilateral with all sides and one outer angle

Area of triangles inside quadrilateral.

Area of a quadrilateral inside a right angled triangle

Prove if parallelogram law worked in a quadrilateral that shape is parallelogram

Isosceles trapezoid and similar triangles

Extending the Law of Cosines formula to quadrilaterals (and even polygon?)

Area of a parallelogram using similar triangles

Distance between mid point of two sides of a quadrilateral

Proving that the quadrilateral ATPQ is cyclic

Circumcircle of a square and an arbitrary point inside it; prove: $|A_1B_1|\cdot|C_1D_1|=|A_1D_1|\cdot|B_1C_1|$

Prove that $FG$ is tangent to a fixed circle.

Prove the orthogonal projections of $S$ form a tangent quadrilateral

Trending Questions

Popular # Hahtags

Popular Questions