In the diagram, RT ≅ GT and NT ≅ IT. How would you prove △RNT ≅ △GIT?

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Explain why the factor 1.5 is broke. into two numbers in the model.

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.