Justify the last two steps of the proof.
given: abcd is a parallelogram.
prove: triangleabc = trianglecda

1. abdc is a parallelogram 1. given
2. ab = dc and bc =dc 2. opposite sides of a parallelogram are congruent
3. ac = ca 3. ?
4. triangleabc = trianglecda 4.?

The cross-sectional areas of a right triangular prism and a right cylinder are congruent. the right triangular prism has a height of 6 units, and the right cylinder has a height of 6 units. which conclusion can be made from the given information? the volume of the triangular prism is half the volume of the cylinder. the volume of the triangular prism is twice the volume of the cylinder. the volume of the triangular prism is equal to the volume of the cylinder. the volume of the triangular prism is not equal to the volume of the cylinder.

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit

Segment wx is shown explain how you would construct a perpendicular bisector of wx using a compass and a straightedge