Vocab and Facts
Angles that add up to 90o are __________?
Complementary
What does it mean if a point M is the midpoint of AC?
AM = MC
m<ABC = 140o. Classify the angle as acute, right, or obtuse.
Obtuse
What is the area formula for a triangle?
A = 1/2(b*h)
Which president is on the penny?
Abraham Lincoln
Two lines intersect at a __________.
Point
Find the distance between the points (-3,1) and (1,1)
distance is about 4.5
What are supplementary angles?
Angles that add to 180 degrees.
The area of a triangle is 12cm2. If the base is 4cm, what is the height?
h = 6cm
Which is bigger 43/86 or 9/20.
43/86
When two lines intersect. We create two pairs of angles that are congruent.
Vertical Angles
S is the midpoint of RT. RS = 20 + 2x, ST = 3x. Find ST.
ST = 60
<1 and <2 are complementary. Find y if m<1 = 16y-3 and m<2 = 4y+13.
y = 4
Find the area of a rectangle with length = 2x and width = x+4 (feet)
A = 2x2+8x ft2
Which classic arcade game was the best selling of all time?
Pac-Man
What kind of Angles share a side and a vertex?
Linear pairs or Adjacent Angles
Given B is between A and C, AB = 20x, BC = 2+4x, and AC = 74, find BC.
BC = 14
Ray BD bisects <ABC. Find m<ABC if m<ABD = 4y and m<DBC = 12+2y.
m<ABC = 48o
Find the radius of a circle with a circumference of 20(pi) inches.
r = 10 in
Which three states border California?
Oregon, Nevada, and Arizona
Segment AB has a point C in between A and B. If we know the length of AB and the length of AC, how do we find the length of CB?
CB = AB - AC
A squirrel has picked its favorite tree. The tree is 30 feet tall. The squirrel is located on a branch that is 3 feet above the bottom branch. The length from the bottom branch to the ground is twice the length from the bottom branch to the top of the tree. How far up is the squirrel?
12 feet
An angle measure is 20 degrees less than the measure of its supplementary angle. Find the measure of both angles.
80 and 100 degrees
The area of a rectangle is 360 yds2. The width is 10 times as long as the length. Find the length and width of the rectangle.
w = 60yds and L = 6yds
I am tall when I am young but short when I get old. What am I?
Pencil or Candle