Spatial thinking unit worksheet 2

i didn't understand . answer step by step if possible

1.EB is parallel to FC because they are on opposite sides and will never touch

2.scalene triangle

right angle

isosceles

3. supplementary angles add to 180 degrees

180-62=118

complementary angles add up to 90

90-62=28

4. 180 - 68 - 38 = 74

5. 6 sides=hexagon

8. sides= octagon

9. sides = nonagon

10. supplementary angles add to 180 degrees

so angle EOC is supplementary to EOF

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)

answer: 10 turtles

step-by-step explanation: as turtles have four legs so 4.10=40 therefore birds are 4 which sue counted