What plane contains points e, f, and h? a) the plane on the top of the figure. b) the plane on the bottom of the figure. c) the plane on the front of the figure. d) the plane that passes at a slant through the figure.

The answer to your question is B

The plane on the bottom of the figure

Trust me on this its the right answer I had the same question and got it correct!

Justifying my reasoning, using the angle addition postulate, 20 + m∠dbc = 80. so, m∠dbc = 60° using the subtraction property of equality. So, m∠dbc = 100° using the addition property of equality.

Step-by-step explanation:

a) using the angle addition postulate, 20 + m < dbc = 80. so, m < dbc = 60° using the subtraction property of equality.

b) using the angle addition postulate, 20 + 80 = m < dbc. so, m < dbc = 100° using the addition property of equality.

c) using the addition property of equality, 20 + 80 = 100, so m < dbc = 100°.

d) using the subtraction property of equality, 80 - 20 = 60, so m < dbc = 60°