as i said, a cluster is either active\active or active\passive irrespective of the number of nodes.
The following article states
Microsoft Technet
Server clusters can take two forms: active/passive clusters and active/active clusters.In active/passive clustering, the cluster includes active nodes and passive nodes. The passive nodes are only used if an active node fails. In active/active clusters, all nodes are active. In the event of a failover, the remaining active node takes on the additional processing operations, which causes a reduction in the overall performance of the cluster. Active/passive cluster configurations are generally recommended over active/active configurations because they often increase performance, availability, and scalability.
The configuration mentioned in the posts above would normally be referred to as an N+1 which essentially is an Active\Passive cluster anyway
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"Ya can't make an omelette without breaking just a few eggs" 😉