Question

lines L and m in the figure are parallel and line n is a traversal.If the measures of the angles are a, b, c, d, e, f, g, h write an equation using the property of interior angles

Answer 1

As from the figure angle d, c, e, f are interior angles...

So sum of interior angles on the side =180

Angle d+e=180---(1)

Angle c+f=180---(2)

Answer 2

Since l//m and n is a transversal
Hence,d+e=180degree (co-interior angles)

Again,Since l//m amd n is a transversal
Hence,c+f=180degree (co-interior angles)

Therefore,interior angles are supplementary