1 Answer

Olpers · Answer 1 · 2022-11-11T21:02:34+0000

Answer:

$\angle ECD = 115$

Explanation:

Given

$\angle ACB = 65$

Required

Determine
$\angle ECD$

From the attached image, we have:

$\angle ACB +\angle ECD = 180$ ---- angle on a straight line

This gives:

$65 +\angle ECD = 180$

Subtract 65 from both sides

$\angle ECD = 180 - 65$

$\angle ECD = 115$

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