Triangles
A shape that has 3 sides.
What is a triangle?
2πr
What is the formula to find the circumference of a circle?
Two angles that add up to 90°.
What are complementary angles?
change in y/change in x
What is slope?
y=mx+b
What is slope-intercept form?
1/2(bh)
What is the area of a triangle?
πr2
What is the formula to find the area of a circle?
Two angles that add up to 180°.
What are supplementary angles?
Ax+By=C
What is slope standard form?
How do you put standard form into slope-intercept form?
By = -Ax + C
A triangle with one inside angle of 90.
What is a right triangle?
True or false: the circumference of a circle is always π radius.
False
Angles A and B are verticle, angle A is 6°, what is the angle of angle B?
6°
A negative slope will result in a ______ line?
Descending line
What is the b in slope-intercept form?
The y-intercept
If one side of an isosceles triangle is 110in what is the size of the other sides.
The other two sides are 35in and 35in.
What is the difference between radius, diameter, and circumference?
The radius is the distance from any point to the center, the diameter is the distance from opposite sides of the circle, and the circumference is the distance around the circle.
Angle A is 98°, angle B is 92°, are they complementary, supplementary, or neither.
Neither
Why is a verticle line’s slope undefined?
A verticle line’s slope is undefined because you cannot divide by zero.
If there is the slope is not written, what does that mean?
It means that the slope is 0.
An _____ has equal sides while the ______ has equal angles.
What is the difference between an equilateral and equiangular triangle?
What is the area of a circle with a diameter of 8?
π16
Angles X and Y form a supplementary angle, angle Y is 89°, what is angle X?
91°
What is the slope of a line with an x-intercept of -2, and a y-intercept of 4?
2
What does a negative y-intercept mean?
A negative y-intercept means the line crosses the y-axis below the origin.