• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/46

Click to flip

### 46 Cards in this Set

• Front
• Back
• 3rd side (hint)
 Midpoint C1+C2/2 Number of triangles in a polygon n - 2 n= # of sides s= sum of interior angles Sum of interior angles of a regular polygon 180(n - 2) n= # of sides s= sum of interior angles Measure of exterior andles of a regular polygon 360/n exterior angles always add up to 360 n= # of sides s= sum of interior angles Measure of interior angles of a regular polygon s/n n= # of sides s= sum of interior angles Number of diagonals from any vertex in a regular polygon n - 3 n= # of sides s= sum of interior angles Total number of diagonals n(n - 3)/2 n= # of sides s= sum of interior angles Proportion P.O.M. = P.O.E. a/b = c/d result of proportion is a RATIO OF SIMLITUDE or a SCALE FACTOR Measure of a median of a triangle 1/2 base distance formula the square root of (x - x)2 + (y - y)2 sine (-) opposite side / hypotenuse sinoh cosine adjacent side / hypotenuse cosah tangent opposite side / adjacent side tanoa measure of a central angle = measure of intercepted arc measure of an inscribed angle = 1/2 measure of intercepted arc measure of an interior angle = 1/2 sum of two intercepted arcs IS ED (interior - sum..exterior - difference) measure of an exterior angle = 1/2 difference of intercepted arcs IS ED (interior - sum..exterior - difference) when a tangent segment intersects a secant segment... tangent segment2 = outside times the whole thing. when two secant segments intersect outside the circle.... the outside times the whole thing = the outside times the whole thing. lateral area of a prism perimeter of base x height lateral area of a cylinder 2(pi)rh total area of a prism and cylinder lateral area + 2 (base area) volulme of a prism base area x height volume of a cylinder (pi)r2h lateral area of a pyramid slant height (perimeter) / 2 lateral area of a cone (pi)r x slant height total area of a cone and pyramid lateral area + base area area of a sphere 4(pi)r2 volume of a sphere 4(pi)r3/3 # of faces s + 2 s = number of sides on the base # of verticies 2s s = number of sides on the base # edges 3s s = number of sides on the base perimeter of a polygon sum of sides SOS circumference of a circle (pi)d length of an arc m. of arc x circumference/360 area of a parallelogram bh area of a rhombus, square, kite d x d/2 area of a triangle bh/2 area of a triangle (w/ semiperimeter) square root of s(s-a)(s-b)(s-c) area of an equilateral triangle s2 / 4 (square root of 3) area of a trapezoid (b + b)h/2 area of a circle (pi)r2 area of a regular polygon ap/2 a = apothem area of a sector m. of arc x area of circle / 360 area of a segment area of a sector - area of a triangle area of a triangle (w. sine) 1/2ab sine c