a right rectangular pyramid is sliced parallel to the base, as shown.
what is the area of the resulting two-dimensional cross-section?
15 cm²
18 cm²
25 cm²
50 cm²

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.

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position

Polygon abcd is a rectangle what is the area