reviewer 1st periodical test 2025-2026

Which of the following is a non-convex polygon?

• 
• 
• 
• 

Which of the following figure does not belong to the group?

• 
• 
• 
• 

A regular hexagon has a perimeter of 42cm. How long is its side?

• 62 cm

• 7 cm

• 14 cm

• 21 cm

The diagram shows two adjacent sides of a regular polygon. What is the name of the polygon?

• A nonagon

• A decagon

• A hendecagon

• A dodecagon

You are given a triangle with two angles measuring 45° and 60°. What is the measure of the third angle for the triangle to be valid?

• 75°

• 90°

• 105°

• 120°

Exterior angles of any polygon add up to be how many degrees?

• 360°

• 720°

• 180°

• 540°

On the figures at the right, ∠YVA and ∠AVN are complementary angles. If m∠YVA = 75°, then what is the measure of m∠AVN?

• 285°

• 105°

• 15°

• 5°

Given the figure at the right, if 𝑚∠𝐴𝐵𝐶 = 120°, which of the following statements is TRUE?

• ∠ABC is an acute angle.

• ∠ABC is a right angle.

• ∠ABC is an obtuse angle.

• ∠ABC has no known classification.

Given the figures at the right, what can you conclude about the two angles?

• They are congruent.

• They form a linear pair.

• They form vertical angles.

• They are perpendicular to each other.

The measures of two complementary angles add up to what value?

• 90 °

• 180°

• 270°

• 360°