I found an answer from www.quora.com

How **many non**-**overlapping triangles can we fit inside** a **circle** which ...

**With** diameter as **one** side , **we can** inscribe two **triangles** on either side of the ...
**can we fit inside** a **circle** which **have one vertex** on the **center** and **another vertex**
...

For more information, see How **many non**-**overlapping triangles can we fit inside** a **circle** which ...

I found an answer from www.khanacademy.com

Area of diagonal-generated **triangles** (video) | Khan Academy

Your browser **does not** currently recognize **any** of the video formats available. ...
Looking at the pink **triangles in** the video, they are congruent. ... **Is** a diagonal a
line that passes through a corner of rectangle to **another**? ... Like if **you** pick two
adjacent corners, the "diagonal" would become **one** of the line segments that
make ...

For more information, see Area of diagonal-generated **triangles** (video) | Khan Academy

I found an answer from www.britannica.com

Mathematics - Mathematics **in** ancient Egypt | Britannica.com

Mathematics - Mathematics **in** ancient Egypt: The introduction of writing **in** Egypt
... (The scribes included 2/3, **one may** observe, even though it **is not** a unit fraction
.) ... assumption”) **is** familiar **in many other** arithmetic traditions (e.g., the Chinese,
..... and that a **circle can** be constructed **with** a given point as **centre** and a given ...

For more information, see Mathematics - Mathematics **in** ancient Egypt | Britannica.com

I found an answer from en.wikipedia.org

Reuleaux **triangle** - Wikipedia

A Reuleaux **triangle** [ʁœlo] **is** a shape formed from the intersection of three
**circular** disks, each ... The Reuleaux **triangle can** also be generalized into three
dimensions **in** ... Finally, **one** draws a third **circle**, again of the same radius, **with**
its **center** at ... This **is** the sharpest possible angle at **any vertex** of **any** curve of
constant ...

For more information, see Reuleaux **triangle** - Wikipedia

I found an answer from math.stackexchange.com

geometry - Why **is** a **circle in** a plane surrounded by 6 **other circles** ...

The answer **is no**: 6-fold symmetry **is** the best **you can do**! .... of the plane by
equilateral **triangles with** angle 180/n at each **vertex**, for **any** n≥7. **In** ... **in** blue) if
at each **triangle vertex you** draw a **circle** inscribed **in** its heptagon, there **will** be 7
**circles** ... **Having** more-than-6 **fit**, or extra room when surrounding **one circle** by
six, **is** a ...

For more information, see geometry - Why **is** a **circle in** a plane surrounded by 6 **other circles** ...

I found an answer from stackoverflow.com

Calculate if **circle fits inside** of polygon (**triangle**/pentagon) given ...

Oct 10, 2018 **...** **In** particular this ensures that the polygon **is not** fully **inside** the **circle**. Given the
**circle** of radius r and centered at c and the edges e0, e**1**, ... **You can** solve that
**with** the quadratic formula for each **vertex**. ... **In any other** case, the intersection
happens on the continuation of the **vertex**, **not** on the **vertex itself**.

For more information, see Calculate if **circle fits inside** of polygon (**triangle**/pentagon) given ...