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If you select one vertex of a heptagon and draw diagonals to all other vertices, you will divide the heptagon into 5 triangles such that the interior angles of the heptagon add up to the same sum as the interior angles of the five triangles.
Now the sum of the interior angles of one triangle is 180 degrees. So for 5 triangles you get 5*180 = 900 degrees.
In general, the interior angles of a polygon with n vertices is (n - 2)*180 degrees.
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What does an heptagons interior angles add up too?
The 7 interior angles of a heptagon add up to 900 degrees
What do the angles in a 20-gon add up too?
The interior angles add up to 3240 degrees
What Angles of a regular hexagon add up too?
The 6 interior angles add up to 720 degrees
What do all the angles of a trapezoid add up too?
They add up to 360 degrees
What do the angles of an 8 sided irregular polygon add too?
360 degrees.
What do the angles of a four sided shape add up too?
360 degrees
What do all the interior angles in a rectangle add up too?
360 degrees
How many degrees does a qudrilateral have to have?
A quadrilateral doesn't have degrees. It has four sides, four inside angles, four outside angles, a perimeter, and an area. If you add up the measures of all four outside angles, they add to 360 degrees. If you add up the measures of all four inside angles, they add to 360 degrees too.
What do the angles of a hexagon add up too?
(6-2)*180 = 720 degrees.
What does angles with parallel lines add up to?
It Adds Upp Too 180..x
What does the trapezium add too?
A trapezium is a 4 sided quadrilateral and its 4 interior angles add up to 360 degrees
What do the angles in a square add up to?
i really need to anser this question too; It is 360 :D
