Question

in the square pyramid shown below, which lines are intersecting? qs and op qr and op or and ps os and ps

Explanation:

Step1: Recall definition of intersecting lines

Intersecting lines share a common point.

Step2: Analyze each option

• For $\overleftrightarrow{QS}$ and $\overleftrightarrow{OP}$, they are skew - no common point.
• For $\overleftrightarrow{QR}$ and $\overleftrightarrow{OP}$, they are skew - no common point.
• For $\overleftrightarrow{OR}$ and $\overleftrightarrow{PS}$, they are skew - no common point.
• For $\overleftrightarrow{OS}$ and $\overleftrightarrow{PS}$, they share the common point $S$.

Answer:

$\overleftrightarrow{OS}$ and $\overleftrightarrow{PS}$