To find the sum of the measures of interior angles , use the formula
(n - 2) * 180°
**( n is used to represent the number of sides )
(n - 2) * 180°
**( n is used to represent the number of sides )
***HINT***
1. Find the measures of the interior angles of a 20-gon.
Find the sum of the measures of the interior angles of each convex polygon. 2. 27-gon 3. 18-gon 4. 19-gon 5. 32-gon In a pentagon, <A = (x+27), <B= (1.5x=3), <C= (x+25), <D = (2x-22), <E= x. 6. Find the measure of each interior angle of ABCDE. 7. What's the sum of x? true or false? 8. A parallelogram is a square. 9. A square is a rhombus. 10. A rectangle is a parallelogram. 11. A rhombus is a rectangle. 12. A rhombus is a square. 13. A square is a rectangle. |