G.PC.2 Decathlon + Unit 8 Assessment

A polygon has an interior angle sum of 9000°. How many sides does the polygon have?

• 25 sides

• 50 sides

• 51 sides

• 52 sides

A convex polygon has vertices A, B, C, D, and E. What is the sum of the measures of the exterior angles of the polygon? (Enter answer only, no degrees sign)

A polygon has an exterior angle of 45°. What is the name of the polygon?

• heptagon

• hexagon

• nonagon

• octagon

A regular polygon has an interior angle of 120°. What is the name of the polygon?

• heptagon

• hexagon

• nonagon

• octagon

Heptagon PQRSTUV is an outline of a camping tent. Find the unknown angle measure of P. (Enter answer only, no degrees sign)

Heptagon PQRSTUV is an outline of a camping tent. Find the unknown angle measure of S. (Enter answer only, no degrees sign)

Heptagon PQRSTUV is an outline of a camping tent. Find the unknown angle measure of V. (Enter answer only, no degrees sign)

The image below is an aerial view of the Pentagon Building in Washington, D.C. Assuming it is a regular polygon, what is the value of one exterior angle?

• 72°

• 108°

• 360°

• 540°

The figure represents a square pattern for a quilt. Given:

AC ⊥ BD

∠CAE = x

∠CDE = (5x - 30)

What is the value of m∠CDE? (Enter answer only, no degrees sign)

The floor plan of a home is modeled by a regular pentagon and squares as shown. What is the measure of ∠ABC?

• 72°

• 90°

• 108°

• 360°