An architect designs a triangular window frame where two angles measure \(55°\) and \(67°\). To complete the design accurately, the third angle is calculated using a basic geometric property.
1. The property applied here is .
2. The third angle is \(^{\circ}\).
3. The type of triangle formed based on the angle is .
4. If the triangular window frame is isosceles and the measure of the unequal angle in a triangular window is \(55°\), then the measure of the two equal angles is \(^{\circ}\).