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Prepare for your math test by studying angles with a protractor, calculating measures using theorems, finding distance and midpoint between points, and exploring circles. Includes formulas and examples.
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Pre-AP BELLWORK 8) Find the distance and midpoint between the points (-3,2),(6,7).
Pre-AP BELLWORK 9)M(4,2) is the midpoint of RS. If S has The coordinates (5,-2), find the coordinates of R.
What to study for test tomorrow… • How to measure angles with a protractor • How to calculate angle measure and missing variables using angle theorems in section 1-4 • Distance and Midpoint • Finding an endpoint given the midpoint and endpoint • Find the perimeter and area of squares and rectangles. • Find the circumference and area of circles • Factor polynomials • Word Wall words
Area(rectangle): b•h Perimeter(rectangle):2b + 2h Area(square): s² Perimeter(square): 4s
Area = Multiply sides Find the area and Perimeter. Ex 1 33 m 16 m
Area = Multiply sides Find the area. Ex 2 66 ft 24 ft
Area = Multiply sides Find the area and Perimeter. with sides 16.1 cm. Ex 3 16.1 cm 16.1 cm
Area = Multiply sides Find the area of square with sides 19.2 m. Ex 4 19.2 m 19.2 m
Graph & Find the area of rectangle ABCD A(-5,6) B(-5,-4) C(-1,-4) D(-1,6) Ex 5 10 units 4 units
Formulas for Circles • A • C or • C • (use 3.14 for ) • r is the radius • d is the diameter
Find the circumference of a circle with a diameter of 7 cm. (use 3.14 for ) Ex 1 C = ( )* ( ) 3.14 7 C =21.98 cm
Find the circumference of a circle. (use 3.14 for ) Ex 2 C = ( )* ( ) 3.14 9.8 9.8 cm C =30.772 cm
Find the circumference of a circle with a radius of 3 cm. (use 3.14 for ) Ex 3 C = 2( )* ( ) 3.14 3 C =18.84 cm
Find the Area of a circle with radius of 10 cm. (use 3.14 for ) Ex 4 A = ( )* ( )2 10 3.14 A =314 cm2
Find the Area of a circle. (use 3.14 for ) Ex 5 r = ½ d r = ½ (1.4) r = 0.7 A = ( )* ( )2 0.7 3.14 1.4 m A =1.5386 m2 Notice: They gave us the diameter…
Find the Area of a circle. (use 3.14 for ) Ex 6 r = ½ d r = ½ (2.8) r = 1.4 A = ( )* ( )2 1.4 3.14 2.8 m A =6.1544 m2 Notice: They gave us the diameter…
Ex.7 Given a circle with a circumference of 94 inches. Find the radius. Find the diameter.
Ex.8 Given a circle with an area of 74 cm². Find the radius.