Geometry Chapter 11 Mid Test Review
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Questions and Answers

What does 'poly' mean in polygon?

  • One
  • Many (correct)
  • Three
  • Two
  • What is a polygon?

    A closed plane figure formed by three or more line segments with no curved edges.

    What is a non-polygon?

    A shape that has openings or gaps, curved lines, or intersecting lines.

    What is a regular polygon?

    <p>A closed plane figure with equal sides and equal angles.</p> Signup and view all the answers

    What does 'tri' mean in triangle?

    <p>Three</p> Signup and view all the answers

    What is a triangle?

    <p>A closed three-sided figure with three angles.</p> Signup and view all the answers

    What is a quadrilateral?

    <p>A closed four-sided figure with four angles.</p> Signup and view all the answers

    What is a pentagon?

    <p>A polygon with five sides and five angles.</p> Signup and view all the answers

    What is a hexagon?

    <p>A closed polygon with six sides and six angles.</p> Signup and view all the answers

    What is a heptagon?

    <p>A closed polygon with seven sides and seven angles.</p> Signup and view all the answers

    What is an octagon?

    <p>A closed polygon with eight sides and eight angles.</p> Signup and view all the answers

    What is a nonagon?

    <p>A closed polygon with nine sides and nine angles.</p> Signup and view all the answers

    What is a decagon?

    <p>A closed polygon with ten sides and ten angles.</p> Signup and view all the answers

    What are acute angles?

    <p>Angles that are less than 90 degrees.</p> Signup and view all the answers

    What are right angles?

    <p>Angles that measure 90 degrees.</p> Signup and view all the answers

    What are obtuse angles?

    <p>Angles that measure greater than 90 degrees and less than 180 degrees.</p> Signup and view all the answers

    What is the triangle's angle sum theorem?

    <p>All angles in any triangle add up to 180 degrees.</p> Signup and view all the answers

    What is an equilateral triangle?

    <p>A triangle with three congruent sides and three congruent angles.</p> Signup and view all the answers

    What is an isosceles triangle?

    <p>A triangle that has only two equal sides and the angles on the equal sides are the same.</p> Signup and view all the answers

    What is a scalene triangle?

    <p>A triangle with no congruent sides or angles.</p> Signup and view all the answers

    Study Notes

    Polygon Concepts

    • A polygon is defined as a closed plane figure formed by three or more line segments, with no curves present.
    • Non-polygons include any shapes that feature openings, gaps, curved lines, or intersecting lines.

    Types of Polygons

    • Regular polygons have all sides and angles equal, maintaining symmetry.
    • Triangles (3 sides, 3 angles) are the simplest form of polygons, categorized into various types:
      • Equilateral triangle: all three sides and angles are congruent.
      • Isosceles triangle: two sides are equal, with the angles opposite these sides also equal.
      • Scalene triangle: no congruent sides or angles.
    • Quadrilateral is a polygon with four sides and angles.
    • Pentagon consists of five sides and angles.
    • Hexagon comprises six sides and angles.
    • Heptagon refers to a seven-sided polygon.
    • Octagon has eight sides and angles, commonly seen in stop signs.
    • Nonagon indicates a polygon with nine sides and angles.
    • Decagon is a polygon that includes ten sides and angles.

    Angle Types

    • Acute angles are defined as angles measuring less than 90 degrees.
    • Right angles measure exactly 90 degrees, typically forming a corner.
    • Obtuse angles are angles greater than 90 degrees but less than 180 degrees.

    Triangle Properties

    • The angle sum theorem for triangles establishes that the sum of all interior angles in any triangle equals 180 degrees.

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    Description

    Prepare for your Geometry Chapter 11 Mid Chapter Test with these flashcards. This review covers important terms like polygons, non-polygons, and types of triangles. Use these definitions to solidify your understanding of key concepts in geometry.

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