Questions and Answers
What is the sum of the interior angles in a quadrilateral?
360 degrees
What is the name of the angle that is greater than 180 degrees but less than 360 degrees?
Reflex Angle
What is the term for two angles that add up to 90 degrees?
Complementary Angles
What is the name of the quadrilateral with all sides of equal length?
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What is the term for the diagonal of a rectangle that bisects each other?
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What is the sum of the interior angles in a triangle?
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What is the name of the triangle with all sides of equal length?
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What is the name of the theorem that states the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides?
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What is the term for two angles that add up to 180 degrees?
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What is the name of the quadrilateral with two pairs of opposite sides?
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Study Notes
Angles

Types of Angles:
 Acute Angle: Less than 90 degrees
 Right Angle: Exactly 90 degrees
 Obtuse Angle: Greater than 90 degrees but less than 180 degrees
 Straight Angle: Exactly 180 degrees
 Reflex Angle: Greater than 180 degrees but less than 360 degrees

Angle Relationships:
 Complementary Angles: Two angles that add up to 90 degrees
 Supplementary Angles: Two angles that add up to 180 degrees
 Vertical Angles: Two angles formed by two intersecting lines
 Adjacent Angles: Two angles that share a common vertex and side
Quadrilaterals
 Definition: A quadrilateral is a polygon with four sides

Types of Quadrilaterals:
 Rectangle: A quadrilateral with all right angles and opposite sides of equal length
 Square: A rectangle with all sides of equal length
 Rhombus: A quadrilateral with all sides of equal length
 Trapezoid: A quadrilateral with two pairs of opposite sides
 Kite: A quadrilateral with two pairs of adjacent sides of equal length

Properties:
 Sum of interior angles: 360 degrees
 Diagonals: Bisect each other in a rectangle and rhombus
Triangles

Types of Triangles:
 Equilateral Triangle: A triangle with all sides of equal length
 Isosceles Triangle: A triangle with two sides of equal length
 Scalene Triangle: A triangle with all sides of different lengths
 Right Triangle: A triangle with one right angle

Properties:
 Sum of interior angles: 180 degrees
 AngleSide Relationships:
 The sum of any two sides is greater than the third side
 The square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides (Pythagorean Theorem)

Triangle Inequalities:
 The length of any side is less than the sum of the lengths of the other two sides
 The length of any side is greater than the difference of the lengths of the other two sides
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Description
Test your understanding of fundamental geometry concepts, including types of angles, quadrilaterals, and triangles, as well as their properties and relationships. Covers acute, right, obtuse, and reflex angles, and various types of quadrilaterals and triangles.