On a piece of paper, use a protractor to construct △abc with m∠a=30° , m∠b=60° , and m∠c=90° .which statements about the triangles are true? select each correct answer. on a piece of paper, use a protractor to construct △abc with m∠a=30° , m∠b=60° , and m∠c=90° .which statements about the triangles are true? select each correct answer.