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1.
Isoscales triangle - base angle
$\beta = 90\degree-\dfrac{\alpha}{2}$
Triangle
Angle
Variables:
β
→
Base angle
α
→
Vertex angle
2.
Sum of angles in parallelogram
$\alpha + \beta = 180\degree$
Parallelogram
Angle
3.
Sum of angles
$\alpha + \beta = 90^\degree$
Rhombus
Angle
4.
$\alpha + \beta = 90\degree$
Right triangle
Angle
5.
Sum of interior angles
$\alpha + \beta + \gamma = 180\degree$
Angle
Triangle
6.
Triangle area - version 4
$A = \dfrac{abc}{4R}$
Angle
Triangle
Variables:
A
→
Area
a, b, c
→
Sides
R
→
Circumcircle radius
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Most Important Formulas
Sum and difference formulas
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Sum to product
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Power of trigonometric functions
Two - dimensional coordinate system
Line in plane
Circle
Ellipse
Hyperbola
Limits of Functions
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Differentiation Formulas
Derivatives of Composite Functions
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