Area Formulas
A= Base * Height/ 2
What is the area of a Triangle?
A 3 sided shape with 3 angles that total 180 degrees.
What is a Triangle?
Two angles whose measures add up to 90°.
What are Complementary Angles?
All 3 sides are equal in length, and all 3 interior angles are equal, measuring exactly 60°.
What is a Equilateral Triangle?
P= 2(length + Width)
What is the formula for the perimeter of a rectangle?
A = 3.14r2
What is the formula for the area of a circle?
A four sided closed shape with four vertices and four angles.
What is a Quadrilateral?
Two angles whose measures add up to 180°.
What are Supplementary Angles?
At least 2 sides are equal in length, and the 2 angles opposite those sides are also equal.
What is a Isosceles Triangle?
P = a + b + c (where a, b, and c are the side lengths)
What is the formula for the perimeter of a triangle?
A = Base * Height
What is the formula for the area of a Parellelogram?
A five sided shape with five angles having a total sum of 540 degrees.
What is a Pentagon?
Two angles that share a common vertex and a common side, without overlapping.
What are Adjacent Angles?
All 3 sides have different lengths, and all 3 interior angles have different measures.
What is a Scalene Triangle?
P = 2(pi)r (where r is the radius)
What is the formula for the circumference of a circle?
A= length * Width
What is the formula for the area of a rectangle?
A six sided shape with six vertices and six angles having a total sum of 720 degrees.
What is a Hexagon?
Opposite angles formed by two intersecting lines; vertical angles are always equal in measure.
What are Vertical Angles?
All 3 interior angles are less than 90°.
What is an Acute Triangle?
P= 2(a + b)
What is the formula for the perimeter of a parallelogram?
A= 1/2 (Base1 + Base2)Height
What is the formula for the area of a Trapezoid?
An eight sided shape having eight vertices and eight angles with a total sum of 1,080 degrees.
What is an Octagon?
Angles created when a transversal line crosses parallel lines.
What are Alternate Interior or Exterior Angles?
1 interior angle measures exactly 90° (the longest side opposite this angle is the hypotenuse).
What is a Right Triangle?
P = a + b + c + d
What is the formula for the perimeter of a trapezoid or a quadrilateral?