angles
name two types of angles
vertical angles
adjacent
complementary
supplementary
what is a cross section
the intersection between a 3d figure and a plane
give me a real life example of vertical angles
siccors, when 4 corners of a road come at the middle where you have to turn
what is a radius and what is a circumference
a radius is a line segment with one endpoint at the center of the circle and the other endpoint on the circle. a circumference of a circle is the distance around the circle
what are adjacent angles?
pairs of angles that share a vertex and one side but do not overlap
name at least two shapes that are cross-sections of a cylinder
rectangle and circle
where can you find complementary angles in real life
when the clock strikes 12: 15 its hands form a right angle 90 degrees
whats the equation for finding diameter if the radius is 45
radius times 2. so 45 times two. so the diameter is 90
suppose you know that angles s and v are complementary. the measure of angle s is 43 degrees. what the measure of angle v?
47 degrees
how many cross sections can a rectangular pyramid have?
3. a rectangle, triangle, and trapezoid. open page 248 in your books to see
what describes the relationship between angles BFA and CFD
they are vertical angles
what is the circumference of the circle if the radius is 60
so, circumference is diameter times pi. so first we have to find the diameter by doubling 60 and getting 120. then we multiply it by 3.14 to get 376.8
what are supplementary and complementary angles?
complementary: two angles whose sum are 90 degrees
supplementary: two angles whose sum is 180 degrees
name one possible cross-section of a sphere
circle
true or false: usually, in supplementary angles, one angle is acute and the other is obtuse
true
YOU FOUND THE UNLUCKY BOX! YOU LOSE 200 POINTS! SORRY!
OOPS :p
let's suppose you now that angles n and l are supplementary. the measurement of angle n is 21 times more than the number of lessons there is in chapter 8. what is the measure of angle l?
4 lessons times 21 is 84. 180 minus 84 is 96. angle l is 96 degrees
name 3 cross sections of a rectangular prism
triangle rectangle and parallelogram
congratulations! YOU GET 200 EXTRA POINTS! YOU FOUND THE MYSTERY BOX!
YAY!
the radius of a circle is 2 times the amount of hands there are in a clock. find the circumference of the circle
it's 37.68