Posted by
**Anonymous** on
.

L and m are two parallel tangents at A and B. The tangent at C makes an intercept DE between L and m. Prove that angle DEF = 90 degree.

Thursday

March 30, 2017
Posted by
**Anonymous** on
.

L and m are two parallel tangents at A and B. The tangent at C makes an intercept DE between L and m. Prove that angle DEF = 90 degree.

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