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In the following triangle, point O is the midpoint of LM, and point P is the midpoint if LN.

Below is the proof that OP||MN. The proof is divided into four parts, where the title of each part indicates its main purpose.
Complete part D of the proof.

Part A: Prove LM/LO=2

Part B: Prove LN/LP=2

Part C: Prove LMN ~ LOP

Part D: Prove OP||MN

In the following triangle point O is the midpoint of LM and point P is the midpoint if LN Below is the proof that OPMN The proof is divided into four parts wher class=

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The complete proof for part D is given in the attached text. Hence, by the nature of the converse corresponding angle,

OP is parallel to MN. (OP ║ MN).

What is a mathematical proof?

A mathematical proof is an argument that is inferential with respect to a mathematical assertion that demonstrates that the provided assumptions logically ensure the conclusion.

The complete proof for part D is given as follow:

If a transversal line "t" divides through OP and MN as given in the attached image, and SE and "T.F" are the divider of ∠QSD and ∠STM, then:

∠QSE = 1/2 ∠QSO; and

∠"STF" = 1/2 ∠STM

If the corresponding angle is ∠QST = "STF", then

QSD = "STF"

Hence, by the nature of the converse corresponding angle,

OP is parallel to MN

Learn more about mathematical proofs at;https://brainly.com/question/26456364

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