24 items are filed under this topic.
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    What do you call a 43-sided polygon? | 
  2020-01-06 | 
  
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  From Alniko: What do you call a 43-sided polygon and what is its interior angle's total measure? Answered by Penny Nom. | 
  
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    Internal acute angles | 
  2019-04-02 | 
  
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  From karan: Prove that a convex polygon cannot have more than three acute internal
angles. Answered by Penny Nom. | 
  
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    The number of sides of a polygon | 
  2016-07-23 | 
  
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  From Shriya: All the angles of a polygon are either 155° or 140°. 
There are twice as many angles of 155 °or  140°.  
Find the number of sides of the polygon Answered by Penny Nom. | 
  
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    External and interior angles of a regular polygon | 
  2016-04-19 | 
  
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  From pearl: a polygon has n sides.The exterior angle is 8 times the interior angle  
find the value of the interior angle  
find the value of n Answered by Penny Nom. | 
  
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    The interior and external angles of a regular polygon | 
  2016-02-17 | 
  
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  From percy: a regular polygon has n sides .The size of each interior angle is eight times the size of each exterior angle . 
1.find the size of each exterior angle  
2.calculate the value of n Answered by Penny Nom. | 
  
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    Interior angles in a parallelogram | 
  2014-08-30 | 
  
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  From xavier: so, one of my math homework questions requires me to know how to find out how to find the interior angles in a parallelogram, the question is, "how many interior angles does a parallelogram have?" Answered by Penny Nom. | 
  
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    The interior angles of a pentagon | 
  2011-03-10 | 
  
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  From Daima: I need help! 
The interior angle of a pentagon i s5 ( I hope ) or 540 degrees. 
The interior angle of a pentagon is what? Explain to me please.
  
Daima Answered by Penny Nom. | 
  
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    The angles in an m-gon and genrealizations | 
  2010-10-16 | 
  
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  From Michael: Hello:
In answer to a student's question, someone named Penny from
 your organization provided a proof that the sum of the interior
 angles of a triangle in the plane is pi radians (or 180 degrees).
  
I am interested (and I'm sure many other people would be too) in
3 potential generalizations of this basic fact in plane geometry: Answered by Walter Whiteley. | 
  
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    The interior angles of a pentagon | 
  2009-04-20 | 
  
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  From Mary: If four interior angles of a five-sided figure pentagon measure 100 degrees each, what will the fifth angle measure? Answered by Harley Weston. | 
  
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    A flat-topped pyramid | 
  2009-01-10 | 
  
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  From Tom: I am planning to build an open ended, flat-topped pyramid with a 
rectangular base 28 x 36 in.;  a square top 6 x6 in.;  and a vertical 
height of 16 in. 
  
I know how to calculate the dimensions of each of the pyramid sides but 
I don't know how to calculate the interior angles when I bend the sheet 
metal.  I will cut the four sides separately  and add a one inch flange 
to each "vertical" edge of the two larger sides to allow for
a bonding surface for the assembly.  How do I calculate that angle?  I 
know it will be greater than 90 degrees but by how much? Answered by Harley Weston. | 
  
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    The angles of a parallelogram | 
  2008-06-11 | 
  
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  From light: ABCD is a parallelogram. If angle A. = (4x=17)degrees and angle B. = (3x-5)degrees , what is angle c? Answered by Penny Nom. | 
  
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    The interior angles of an 18-sided polygon | 
  2008-06-04 | 
  
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  From Alfred: How do I find the sum of the interior angles of an 18-sided polygon? Answered by Janice Cotcher. | 
  
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    The interior angles of a parallelogram | 
  2008-01-29 | 
  
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  From amber: the measure of one interior angle of a parallelogram is 42 degrees more than twice the measure of another angle. Find the measure of each angle. Answered by Penny Nom. | 
  
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    The interior angles of a parallelogram | 
  2008-01-28 | 
  
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  From steffie: How do you calculate the interior angle sof a parallelogram? Answered by Penny Nom. | 
  
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    How can I find out how many sides there are? | 
  2007-04-23 | 
  
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  From gn: I know the angle measurements of a convex polygon. They are congruent angles.  How can I find out how many sides there are? Answered by Steve La Rocque, Penny Nom and Walter Whiteley. | 
  
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    Interior and exterior angles | 
  2007-04-02 | 
  
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  From Anuj: If in a regular polygon, each exterior angle is twice the interior angle,find the number of sides? Answered by Leeanne Boehm. | 
  
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    The interior angles of a parallelogram | 
  2007-02-07 | 
  
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  From jenniffeir: Can a parallelogram have two 45 degree angles and two 75 degree angles? Answered by Haley Ess. | 
  
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    Interior and external angles of a polygon | 
  2006-01-17 | 
  
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  From Anthony:
 In a regular polygon, the ratio of the interior angles to the exterior angles is 3:1. 
                 
                (a) Find the measure of the interior angle. 
                (b) How many sides are there 
             Answered by Penny Nom. | 
  
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    Each interior angle of a particular polygon is an obtuse angle... | 
  2005-02-22 | 
  
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  From Victoria: Each interior angle of a particular polygon is an obtuse angle which is a whole number of degrees.  What is the greatest number of sides the polygon could have?  Answered by Walter Whiteley. | 
  
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    Interior and exterior angles of a polygon | 
  2004-11-16 | 
  
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  From Aaron: How do you find the measure of interior and exterior angles of a regular polygon when you are given the number of sides? Answered by Walter Whiteley. | 
  
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    The angles in a regular polygon | 
  2003-12-21 | 
  
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  From Ernie: If i have a measure of one interior angle of a polygon, how can i find the number of sides it has? Answered by Penny Nom. | 
  
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    A regular polygon | 
  2003-02-26 | 
  
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  From Melissa: The measure of each interior angle of a regular polygon is eight times that of an exterior angle of the polygon. How many sides does the polygon have? Answered by Penny Nom. | 
  
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    The sum of the angles in a polygon | 
  2001-01-23 | 
  
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  From A student: What is the sum of the measures (interior angles) in an octagon ... heptagon ... decagon.   Answered by Penny Nom. | 
  
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    Angles in Polygons | 
  1999-01-21 | 
  
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  From Jen:
  - How do u find the interior angles of a pentagon when you are given 4 of the angles and you need to find the fifth?  
   - If you are given the measure of each exterior angle of a regular polygon, how do you figure out how many sides the polygon has?  
   - i need all information on polygons and how to find their angles!!!  
   Answered by Jack LeSage. | 
  
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