Consider the diagram below:
State the angle sum of a pentagon.
Solve for the value of $x$x.
Solve for $x$x in the diagram below:
Solve for $x$x in the diagram below:
Solve for the value of $\angle ABC$∠ABC in the diagram below, where $ABFGH$ABFGH and $BCDEF$BCDEF are regular pentagons:
calculates the angle sum of any polygon and uses minimum conditions to prove triangles are congruent or similar
proves triangles are similar, and uses formal geometric reasoning to establish properties of triangles and quadrilaterals