Question

Find the number of sides of a polygon if the sum of the interior angles is 10 right angles​

Answer 1

Answer:

7

Step-by-step explanation:

Sum of interior angles = $(n-2) 180$

$(10)(90) = (n-2) 180$

$n = \frac{(10)(90)}{180} +2=7$

Therefore, the polygon is a heptagon.

Hope it helped...

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Answer 2

Answer:6

Step-by-step explanation:

All polygons can be divided up into triangles by joining one vertex to all of the other vertices.

The number of triangles is always two less than the number of sides.

If you know the number of triangles you add  2  to find the number of sides.

Every triangle has  180 °

Number of triangles:  900 / 180 = 5  triangles

Number of sides:    5+ 2 =7 sides