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# 20 Questions - PowerPoint PPT Presentation

20 Questions. Chapter 10 Review. 1. Polygons. The sum of the measures of the interior angles of a convex polygon is 2520. How many sides does the polygon contain?. Answer. Answer to Question #1. 16 Sides. 2. Polygons.

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### 20 Questions

Chapter 10 Review

1. Polygons

The sum of the measures of the interior angles of a convex polygon is 2520. How many sides does the polygon contain?

2. Polygons

The sum of the measures of five interior angles of a heptagon is 690. The measure of the 6th angle is twice the measure of the seventh. Find the measure of the 6th angle.

3. Polygons

Find the sum of the measures of the exterior angles of a convex nonagon.

4. Polygons

Find the sum of the measures of the interior angles of a convex 14-gon

5. Polygons

How many sides are in a regular polygon if each interior angle measures 144º?

6. Parallelograms

Find the area of a parallelogram that has vertices: A(-4, 15), B(1, 15), C(4, 10), and D(-1, 10)

25 square units

7. Parallelograms

The length of a rectangle is 4in. More than the width. If the perimeter is 84in., find the area of the rectangle.

437 square inches

8. Parallelograms

Find the area of a parallelogram with side lengths 8cm and 16cm and an acute angle of 45º.

9. Triangle, Rhombi, and Trapezoids

Find the area of a rhombus with sides 8 inches and diagonals of 12 inches and 9 inches.

10. Triangle, Rhombi, and Trapezoids

Find the area of an isosceles trapezoid with base angles of 30º, height of

and a long base of 150 cm

11. Triangle, Rhombi, and Trapezoids

The area of a triangle is 160 sq cm. The height is 20 cm., Find the length of the base.

12. Triangle, Rhombi, and Trapezoids

Find the value of h

26cm

24cm

h

10cm

13. Regular Polygons and Circles

The area of triangle ABC is 24 sq meters. If AC = 6 m and AB is a diameter, find the area of the circle

C

A

B

25sq meters

14. Regular Polygons and Circles

Find the area of a regular octagon with radius of 5 yd.

15. Regular Polygons and circles

Find the area of a regular hexagon with a side length of 22 ft.

16. Regular Polygons

Find the area of a regular decagon with an apothem of 3 cm

17. Regular Polygons

Find the area of the shaded region. AB = 8 ft. C is the midpoint of AB

18. Geometric Probabilities

Luke told Scott that he would arrive at the basketball game sometime between 7:20 and 7:45. Scott says that he must be on the court at 7:30. What is the probability that Luke will arrive by 7:30?

10/25 = 2/5 = .4

19. Geometric Probability

Find the area of the sector (inside the central angle).

4 cm

120º