1. The measures of each interior angle of a pentagon are 5x + 2, 3x + 5, 5x + 10, 8x + 8 and 4x + 15 respectively. Find the measures of all interior angles.

2. The roof of Teacher Joy's house in Barangay Mabuhay is triangular. The measures of the two angles are 60° and 70°. Find the third angle?.

3. Each interior angle of a regular polygon is twice the measure of each exterior angle. How many sides does the polygon have?


Solution and Answer please
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