Question

properties of isosceles triangles (diagram) m∠dce. answer attempt 2 out of 2 m∠dce = ° submit answer

Explanation:

Step1: Recall isosceles - triangle property

In an isosceles triangle, if two sides are equal, the angles opposite those sides are equal. Here, since \(CD = DE\), \(\angle DCE=\angle DEC\).

Step2: Identify given angle

We are given that \(\angle DEC = 42^{\circ}\).

Answer:

\(42\)