5th Grade Geometry Terms

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Quizzes Created: 1 | Total Attempts: 988

Questions: 16 | Attempts: 989 | Updated: Dec 16, 2024

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GleThis quiz is designed to assess students on their knowledge of different triangles, different polygons, and different quadrilaterals.

Questions and Answers

1.

An equilateral triangle has no equal sides.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
An equilateral triangle is defined as a triangle with all three sides of equal length. This also means that all three angles of an equilateral triangle are equal, each measuring 60 degrees.

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2.

An isosceles triangle has two sides that are the same length.
- A.
  
  True
- B.
  
  Fase
Correct Answer
A. True

Explanation
An isosceles triangle is a triangle that has two sides of equal length. This means that two of its sides are the same length, while the third side may be a different length. Therefore, the statement that an isosceles triangle has two sides that are the same length is true.

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3.

An acute triangle contains only one acute angle.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
An acute triangle is a triangle that contains three acute angles, meaning all three angles are less than 90 degrees. Therefore, the statement that an acute triangle contains only one acute angle is incorrect.

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4.

An obtuse angle is made up of three obtuse angles.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
An obtuse angle is not made up of three obtuse angles. An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees. It is a single angle and cannot be composed of multiple angles. Therefore, the statement is false.

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2
2
5.

A scalene triangle has no equal sides.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
A scalene triangle is a type of triangle that has no equal sides. This means that all three sides of a scalene triangle have different lengths. Therefore, the correct answer is true.

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2
2
6.

A right triangle has one 90 degree angle.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
A right triangle is defined as a triangle that has one angle measuring 90 degrees. Therefore, it is true that a right triangle has one 90 degree angle.

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0
2
7.

A polygon with 6 sides is called a/an
- A.
  
  Octagon
- B.
  
  Pentagn
- C.
  
  Hexagon
- D.
  
  Triangle
- E.
  
  Quadrilaterl
Correct Answer
C. Hexagon

Explanation
A polygon with 6 sides is called a hexagon. The prefix "hex-" means six in Greek, so a hexagon is a polygon with six sides.

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3
2
8.

A polygon with eight sides is called a/an
- A.
  
  Hexagon
- B.
  
  Octagon
- C.
  
  Quadrilateral
- D.
  
  Pentagon
- E.
  
  Triangle
Correct Answer
B. Octagon

Explanation
A polygon with eight sides is called an octagon.

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1
2
9.

A polygon with three sides is called a/an
- A.
  
  Hexagon
- B.
  
  Pentagon
- C.
  
  Octagon
- D.
  
  Triangle
- E.
  
  Quadrilateral
Correct Answer
D. Triangle

Explanation
A polygon with three sides is called a triangle.

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3
1
10.

A polygon with four sides is called a/an
- A.
  
  Hexagon
- B.
  
  Quadrilateral
- C.
  
  Octagon
- D.
  
  Triangle
- E.
  
  Pentagon
Correct Answer
B. Quadrilateral

Explanation
A polygon with four sides is called a quadrilateral.

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2
1
11.

A polygon with five sides is called a/an
- A.
  
  Hexagon
- B.
  
  Octagon
- C.
  
  Triangle
- D.
  
  Quadrilateral
- E.
  
  Pentagon
Correct Answer
E. Pentagon

Explanation
A polygon with five sides is called a pentagon.

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3
2
12.

I am a quadrilateral with two parallel sides, what am I?
- A.
  
  Rectangle
- B.
  
  Parallelogram
- C.
  
  Square
- D.
  
  Rhombus
- E.
  
  Trapezoid
Correct Answer
B. Parallelogram

Explanation
A parallelogram is a quadrilateral with two pairs of parallel sides. It is a shape where opposite sides are parallel and equal in length. This makes it different from a rectangle, square, rhombus, and trapezoid, as they do not necessarily have two pairs of parallel sides. Therefore, a parallelogram is the correct answer for a quadrilateral with two parallel sides.

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2
3
13.

I am a parallelogram with four right angles, what am I?
- A.
  
  Rectangle
- B.
  
  Rhombus
- C.
  
  Square
- D.
  
  Trapezoid
- E.
  
  Parallelogram
Correct Answer
A. Rectangle

Explanation
A rectangle is a parallelogram with four right angles. It is a quadrilateral with opposite sides that are equal in length and parallel to each other. The fact that it has four right angles distinguishes it from other parallelograms, such as the rhombus and trapezoid, which do not necessarily have right angles. A square is a special type of rectangle where all sides are equal in length. Therefore, the correct answer is rectangle.

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1
2
14.

I am a parallelogram with all sides the same length and four right angles, what am I?
- A.
  
  Trapezoid
- B.
  
  Rectangle
- C.
  
  Square
- D.
  
  Parallelogram
- E.
  
  Rhombus
Correct Answer
C. Square

Explanation
A square is a parallelogram with all sides the same length and four right angles. It is the only shape among the options that satisfies these conditions. A trapezoid has at least one pair of parallel sides but does not have all sides the same length or four right angles. A rectangle has four right angles but does not have all sides the same length. A parallelogram has opposite sides parallel but does not have all sides the same length or four right angles. A rhombus has all sides the same length but does not have four right angles. Therefore, the correct answer is square.

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1
1
15.

I am a parallelogram with all four sides equal, but contain no right angles, what am I?
- A.
  
  Rhombus
- B.
  
  Rectangle
- C.
  
  Trapezoid
- D.
  
  Parallelogram
- E.
  
  Square
Correct Answer
A. Rhombus

Explanation
A rhombus is a parallelogram with all four sides equal in length, but it does not have any right angles. It is a special type of parallelogram that has opposite sides parallel and opposite angles equal. Unlike a rectangle or a square, a rhombus does not have any right angles. Therefore, a rhombus is the correct answer to this question.

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2
1
16.

I am a quadrilateral with only one pair of parallel sides, I can be made by using one quadrilateral and two triangles, what am I?
- A.
  
  Rectangle
- B.
  
  Rhombus
- C.
  
  Parallelogram
- D.
  
  Trapezoid
- E.
  
  Square
Correct Answer
D. Trapezoid

Explanation
A trapezoid is a quadrilateral with only one pair of parallel sides. It can be made by using one quadrilateral and two triangles. A rectangle has two pairs of parallel sides, a rhombus has all sides equal in length, a parallelogram has opposite sides parallel and equal in length, and a square has all sides equal in length and all angles equal to 90 degrees. Therefore, the correct answer is trapezoid.

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3
2

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Current Version
Dec 16, 2024

Quiz Edited by
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May 16, 2010

Quiz Created by
Cgoromzek

5th Grade Geometry Terms

An equilateral triangle has no equal sides.

An isosceles triangle has two sides that are the same length.

An acute triangle contains only one acute angle.

An obtuse angle is made up of three obtuse angles.

A scalene triangle has no equal sides.

A right triangle has one 90 degree angle.

A polygon with 6 sides is called a/an

A polygon with eight sides is called a/an

A polygon with three sides is called a/an

A polygon with four sides is called a/an

A polygon with five sides is called a/an

I am a quadrilateral with two parallel sides, what am I?

I am a parallelogram with four right angles, what am I?

I am a parallelogram with all sides the same length and four right angles, what am I?

I am a parallelogram with all four sides equal, but contain no right angles, what am I?

I am a quadrilateral with only one pair of parallel sides, I can be made by using one quadrilateral and two triangles, what am I?