www.geom.uiuc.edu/~dwiggins/conj06.html

We have seen in the Triangle Sum Conjecture that the sum of the angles in any
triangle is 180 **degrees**. The **Quadrilateral** Sum Conjecture tells us the sum of the
...

www.coolmath.com/reference/polygons-04-quadrilaterals

Because the sum of the angles of each triangle is 180 **degrees**... We get.
**quadrilaterals**. So, the sum of the interior angles of a **quadrilateral** is 360 **degrees**
.

www.reference.com/math/many-degrees-quadrilateral-3bdd32915227ae84

There are 360 **degrees** in a convex **quadrilateral**. A convex **quadrilateral** is made
up of four sides and four corners, or angles. None of the angles bend inward ...

www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT2_RESOURCE/U07_L2_T1_text_final.html

You could draw **many quadrilaterals** such as these and carefully measure the
four angles. You would find that for every **quadrilateral**, the sum of the interior ...

sciencing.com/degrees-quadrilateral-8367679.html

Apr 24, 2017 **...** In order to solve **many** geometry problems, it's important to understand the basics
of angle measurement and the rules that all polygons follow.

www.aaamath.com/geo612x3.htm

Example: **How many degrees** are in the fourth angle of a **quadrilateral** whose
other three angles are 80^{o} and 110^{o} and 95^{o}? Answer: 360^{o} - 80^{o} - 110^{o} - 95^{o}
...

www.math.com/school/subject3/lessons/S3U2L1DP.html

The word polygon is a combination of two Greek words: "poly" means **many** and
... We find that the sum of the interior angles of a **quadrilateral** is 360 **degrees**.

www.quora.com/How-many-degrees-are-in-a-quadrilateral

If you mean the sum of the interior angles, 360. You can always divide a
**quadrilateral** into two triangles, each of which has 180 **degrees**. Well ...

www.aaaknow.com/lessonFull.php?slug=geoFindAngleQuad

The sum of the interior angles of a **quadrilateral** are equal to 3600°. ... Example:
**How many degrees** are in the fourth angle of a **quadrilateral** whose other angles
...