What is an interval In math

Write the converse of the following statement: if the trees have no leaves, then it is fall. if the trees have no leaves, then it is fall. the trees have no leaves, therefore it is fall. it is fall since the trees have no leaves. if it is fall, then the trees have no leaves.

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us