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Quiz about Not a Love Triangle
Quiz about Not a Love Triangle

Not a Love Triangle Trivia Quiz


The German mathematician August L. Crelle found it incredible that a figure as simple as a triangle could have so many properties.

A matching quiz by masfon. Estimated time: 3 mins.
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Author
masfon
Time
3 mins
Type
Match Quiz
Quiz #
398,203
Updated
Dec 03 21
# Qns
10
Difficulty
Easy
Avg Score
9 / 10
Plays
690
Last 3 plays: bocrow000 (5/10), knethen222 (10/10), scottm (10/10).
(a) Drag-and-drop from the right to the left, or (b) click on a right side answer box and then on a left side box to move it.
QuestionsChoices
1. A description which applies to all triangles.  
  Isosceles
2. A triangle in which all sides have the same length.  
  Obtuse
3. A triangle in which each side has a different length.  
  Right
4. A triangle which all internal angles are less than 90°.  
  Hypotenuse
5. A triangle which one of the inner angles measures more than 90°.  
  Closed polygon
6. A triangle with one angle of 90° and two acute angles.   
  Catheti
7. The longest side of a right-angled triangle.  
  Vertex
8. The sides that form the right angle in the right triangle.  
  Acute
9. Point at which two sides of a triangle meet.  
  Equilateral
10. A triangle with two sides of the same lengh  
  Scalene





Select each answer

1. A description which applies to all triangles.
2. A triangle in which all sides have the same length.
3. A triangle in which each side has a different length.
4. A triangle which all internal angles are less than 90°.
5. A triangle which one of the inner angles measures more than 90°.
6. A triangle with one angle of 90° and two acute angles.
7. The longest side of a right-angled triangle.
8. The sides that form the right angle in the right triangle.
9. Point at which two sides of a triangle meet.
10. A triangle with two sides of the same lengh

Most Recent Scores
Mar 24 2024 : bocrow000: 5/10
Mar 23 2024 : knethen222: 10/10
Mar 03 2024 : scottm: 10/10
Feb 23 2024 : dim_dude: 10/10
Feb 23 2024 : Guest 4: 10/10
Feb 09 2024 : Guest 68: 6/10
Feb 03 2024 : shortone: 10/10

Quiz Answer Key and Fun Facts
1. A description which applies to all triangles.

Answer: Closed polygon

The closed polygon is a flat figure formed by segments of connected straight lines that form a closed figure. In any polygon the number of sides and vertices is always equal. The Greek mathematician, Euclid (300 BC), based on axioms and theorems, systematized the study of flat and solid figures, giving rise to geometry. The triangle is one of the basic shapes in geometry.
2. A triangle in which all sides have the same length.

Answer: Equilateral

The equilateral triangle has all three sides of the same length and all angles with the same measurement. An equilateral triangle is a regular polygon. All the properties and facts described for regular polygons apply to an equilateral triangle.
3. A triangle in which each side has a different length.

Answer: Scalene

In a scalene triangle, all sides and all angles are different. The scalene triangle is the only triangle that does not have an axis of symmetry. The internal angles of a scalene triangle, as well as all the other triangles, always add up to 180°.
4. A triangle which all internal angles are less than 90°.

Answer: Acute

An acute triangle has three angles with less than 90° by definition. The Greek letter Delta resembles a acute triangle.
5. A triangle which one of the inner angles measures more than 90°.

Answer: Obtuse

The obtuse triangle is one with one angle greater than 90° and two acute angles. The result of the sum of the exterior angles of a acute triangle and any other type of triangle is always equal to 360°.
6. A triangle with one angle of 90° and two acute angles.

Answer: Right

The right triangle or right-angled triangle has an angle that measures 90°, i.e. has a right angle. The right triangle is the basis for trigonometry. Thales' theorem deals with this kind of triangle. It states that "if A, B, and C are points marked in a circle and the line joining A to B is the diameter of this circle, the angle formed at the meeting between lines AB and BC will be 90°".

This theorem mentioned in Euclid's Elements and in Dante's Paradiso is attributed to Thales of Miletus, but is sometimes attributed to Pythagoras.
7. The longest side of a right-angled triangle.

Answer: Hypotenuse

The longest side of a right triangle is called the hypotenuse and is always the side that lies opposite the 90° angle. The word hypotenuse comes from the Greek word "hypoteinousa" which means "stretching under". Pythagoras mentioned the hypotenuse in his theorem that states: "The square of the hypotenuse is equal to the sum of the squares of the other two sides".
8. The sides that form the right angle in the right triangle.

Answer: Catheti

In a right-angled triangle the catheti (singular cathetus), commonly known as "leg", are the sides adjacent to the right angle. If the catheti of a right triangle have the same length the triangle is isosceles. When they have different lengths it can be called minor and major cathetus.
9. Point at which two sides of a triangle meet.

Answer: Vertex

In a flat figure, such as a triangle, the point where two lines meet is the vertex, always remembering that the lines meet at their end point. The vertex (plural vertices) is a corner or the point where two line segments meet.
10. A triangle with two sides of the same lengh

Answer: Isosceles

The isosceles triangle has two sides with the same length and two angles with the same measure. The unequal side of one isosceles triangle is usually referred to as the " base" of the triangle.
Source: Author masfon

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