Question

abcd is a square. given that the measure of ∠edc = 70°, which expression below could be used to find the measure of ∠ade? 90+(70 + 10) 90 - 70

Explanation:

Step1: Recall angle - property of a square

In square \(ABCD\), \(\angle ADC = 90^{\circ}\), and \(\angle ADC=\angle ADE+\angle EDC\).

Step2: Solve for \(\angle ADE\)

We know \(\angle ADC = 90^{\circ}\) and \(\angle EDC = 70^{\circ}\). So, \(\angle ADE=\angle ADC-\angle EDC\). Substituting the values, we get \(\angle ADE = 90 - 70\).

Answer:

\(90 - 70\)