The perimeter of triangle is 30cm. The perimeter of rectangle is also 30cm. Use this information to find area of the square below

Y=(x+3)(x-4)(x+1)^2 sulutions? multiplicity?

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.

Measure a and b and find their sum. how are the angles related?