Various formulas
The Volume of a ___________________ is 1/3 B x h
What is a pyramid?
Every Triangle has an incircle (true or false)
What is True
The A in SOHCAHTOA stands for _________________
What is adjacent?
Every cross section of a sphere is a ________________
What is a circle?
The pythagorean formula is ___________________
What is a2 + b2 = c2
Circumference of a circle = _____ x pi
What is diameter? Or 2r
The ____________________ segments to a circle from an external point are equal
What is a tangent?
Line down the middle of a triangle that bisects both of the 2 sides (see board)
What is midsegment?
The circumference of a circle is the limit of the perimeters of the inscribed regular polygons (T/F)?
What is true?
Two of the 3 similarity theorems
What is AA and SAS? Or SSS?
The formula for finding the slope of a line
what is (y2-y1)/x2-x1 ?
The ratio of the ________________ of 2 similar polygons is equal to the square of the ratio of the corresponding sides
What is area?
CPCTC stands for _____________________
What is: Corresponding Parts of Congruent Triangles are Congruent?
In a circle, the intercepted arc of an INSCRIBED angle 30 degrees is _______________________ (what are the intercepted arc degrees)
What is 60?
In a 30-60-90 right triangle, the hypotenuse is _______ the SHORTER leg
What is twice?
the formula for finding the interior angles of a polygon
What is 180(n-2)
Principle used to prove that 2 geometric solids have equal AREAS
What is Cavalieri's?
A(n) _____________ of a regular polygon is a perpendicular line segment from its center to one of its SIDES.
What is an apothem?
On the board - what are the degrees of X ?
What is 70 degrees?
the number of cones that can fit in a cylinder of the same height and base area radius?
What is THREE?
The formula for the area of a trapezoid
What is [(b1+b2)h]/2 ?
The _______________ of a triangle is the point in which the lines containing its ALTITUDES are concurrent
What is centroid?
A 12 sided polygon is called a _________________
What is a dodecagon ?
A polygon is ______________ in a circle iff each vertex of the polygon lies on the circle
What is inscribed?
A quadrilateral is cyclic iff a pair of its opposite angles are __________________
What is supplementary?