# Equation

**Topics:**Quadrilateral, Square, Rectangle

**Pages:**3 (325 words)

**Published:**February 24, 2013

*a. -b±b2-4ac2a = x

b. a2+b2=c2

c. fx=a0+n=1∞ancosnπxL+bnsinnπxL

2. Which of the following represents a set of parallel lines?

a. Option one

b. Option two

*c. Option three

3. What is the definition of an obtuse angle?

*a. an angle greater than 90°

b. an angle equal to 90°

c. an angle less than 90°

4. Which formula below represents the area of a circle?

a. A=2πr

*b. A=πr2

c. A=π2r

d. A= √π

5.

What geometric term is represented by the image below?

a. a corner

*b. a cross-section

c. the circumference

d. the perimeter

11. Using the data in the table below, calculate the mean, or average, number of points scored by Player B.

| Game 1| Game 2| Game 3| Game 4| Game 5|

Player A| 13| 12| 9| 11| 13|

Player B| 12| 11| 15| 20| 12|

*a. 14

b. 11.5

c. 13

d. 13.67

6. This instrument is commonly used by surveyors. It measures horizontal and vertical angles to determine the location of a point from other known points at either end of a fixed baseline, rather than measuring distances to the point directly. What is it called?

a. triangulator

b. binocular

c. tripod

*d. theodolite

7. What is the name of the missing shape in the flowchart below?

a. Acute

b. Obtuse

*c. Isosceles

d. Right

8. What category includes all of the items on the list below?

* Square

* Rectangle

* Rhombus

* Parallelogram

* Trapezoid

* Pentagon

a. Quadrilaterals

b. Triangles

c. Ellipses

*d. Polygons

9. Determine the area of the shaded portion in the diagram below.

A B

C D

* ABCD is a square

* ABCD touches the circle at 4 points

* The length of one side of the square ABCD is 2 cm

a. π– 4

*b. 2π – 4

c. 3π 2 – 4

d. 4π 3 – 4

e. 5π – 4

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