Internal angles IST

Determine internal angles of isosceles trapezium ABCD /a, c are the bases/ and if:

alpha:gamma = 1:3


α =  45 °
β =  45 °
γ =  135 °
δ =  135 °


3a = 1c

a-b = 0
c-d = 0
3a-c = 0
a+b+c+d = 360

a = 45
b = 45
c = 135
d = 135

Calculated by our linear equations calculator.

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