I need answer for this one.

3rd Quarter SY 2020 - 2021 Name: Gr/Sec: Date: DIRECTIONS: Read and understand each item carefully and encircle the letter of the correct answer. 1. The following are examples of quadrilateral, EXCEPT? A. Square B. Rectangle C. Rhombus D. Triangle 2. The sum of interior angles of a quadrilateral is A.180 B. 90 C. 360 D. 520" 3. A polygon with 8 sides is called A. Hexagon B. Octagon C. Heptagon D. Decagon 4. Which is following figure is not considered as polygon? A. Triangle B. Circle C. Square D. Parallelogram 5. A polygon is said to be concave if at least one of the interior angles is greater than A. 180 B. 90 C. 45 D. 120 6. A polygon should have at least - number of sides A. One B. Two C. Three D. None of these 7. A polygon is a closed 2D shape made up of A. Curved lines B. Straight lines C. Perpendicular lines D. None of these 8. The sum of interior angles of a polygon with "n" sides is A. 360"(n-2) B. 180'(n-2) C. 90"(n-2) D. 450(n-2) 9. Arrange the following polygons in order from least to greatest number of sides. Hexagon, triangle, decagon, pentagon A. Decagon, hexagon, pentagon, triangle B. Triangle, hexagon, pentagon, decagon C. Hexagon, triangle, decagon, pentagon D. Triangle, pentagon, hexagon, decagon 10. A polygon with 11 sides. A. Nonagon B. decagon C. hendecagon D. Dodecagon 1 1. Stop signs are constructed in the shape of regular octagons. Which of the following angles are at the vertices of a regular octagon? A. Acute B. Obtuse C. Right D. Straight 12. What do you call a triangle with three congruent angles? A. equiangular triangle B. right triangle C. acute triangle D. equilateral triangle 13. Find the sum of interior angle of a convex polygon with 18 sides? A. 1080 B.810 C.1620 D. 2880 14. What is the value of x in the figure? A. 50 B. 60 C. 70 D. 80 2x 15. What is the sum of the measures of the exterior angles one at each vertex of a polygon with 26 sides? 2x + 10 120 A. 360 B. 720 C. 1170 D. 4320 16. How many sides has a convex polygon if the sum of the measures of its angles is 2160? 110 A. 11 B. 12 C. 13 D. 14 17. The measure of the first three angles of a quadrilateral is 62, 84 and 160. What is the measure of the fourth angle? A. 108 B.90 C. 54 D. 45 18. The exterior angle of a regular polygon has a measure of 40. How many sides does the regular polygon have? A. 8 B. 9 C. 10 D. 11 19. How many diagonals can be drawn in a polygon of 26 sides? A. 312 B. 325 C. 199 D. 299 20. Find the sum of the interior angles of a regular polygon with 1 1 sides? A. 1980 B. 1620 C. 810 D. 990