Angle Relationships
2 angles that add up to 180 degrees are....
supplementary angles
pg 104, question 1
55 degrees
pg 108, question 4
6
write out the area formulas for a triangle, parallelogram, and trapezoid
Triangle: A=1/2 bh
Parallelogram: A=bh
Trapezoid: A=1/2(b1+b2)h
pg 114, question 11
area = 121 pi
circumference = 22 pi
two angles that add up to 90 degrees are...
complementary angles
pg 105, question 8 (solve for x not the angle)
9
pg 108, question 6
5.5
pg 110, example 2
18.9
pg 114, question 12
area = 81 pi
circumference = 18 pi
What type of angle is greater than 90 degrees?
obtuse angle
pg 105, question 10 (solve for x not angle)
15
pg 107, example 4
yes (show work)
pg 112, question 1 (area and perimeter)
area= 28.5
perimeter=26
pg 114, question 13
area = 22.09 pi
circumference = 9.4 pi
How many degrees is a full angle?
360 degrees
pg 104, question 3
23 degrees
pg 108, question 8
4.5
pg 112, question 5 (area only)
area= 30.8 ft^2
pg 114, question 14
area = 17.64 pi
circumference = 8.4 pi
In a vertical pair, which two angles are equal
Angles directly opposite/across from each other
pg 105, question 12 (solve for all angles, not x)
88, 235, 37
pg 108, question 12
6.8
pg 112, question 6 (area only)
area = 34.77 mi^2
pg 114, question 15
area = 15.21 pi
circumference = 7.8 pi