20 Questions  Settings  Grade 8 mathematics (geometry) is a quiz in which you are tested on your skills on the calculation of different mathematical concepts of shapes. The use of the geometrical set is also tested. Learn more below.

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• 1.
Classify the triangle based on its side lengths.
• A.

Scalene Triangle

• B.

Equilateral Triangle

• C.

Isosceles Triangle

• D.

Obtuse Triangle

• 2.
Classify the triangle based on its angle measures.
• A.

Equiangular Triangle

• B.

Equilateral Triangle

• C.

Right Triangle

• D.

Scalene Triangle

• 3.
Classify the triangle based on its side lengths and angle measures.
• A.

Equiangular Triangle

• B.

Scalene Triangle

• C.

Obtuse Triangle

• D.

Isosceles Triangle

• 4.
• A.

Equilateral Triangle

• B.

Scalene Triangle

• C.

Isosceles Triangle

• D.

Obtuse Triangle

• 5.
What do you call a triangle with three congruent sides?
• A.

Equilateral Triangle

• B.

Scalene Triangle

• C.

Obtuse Triangle

• D.

Equiangular Triangle

• 6.
What must be the value of x in the figure below?
• A.

78

• B.

88

• C.

76

• D.

86

• 7.
What must be the value of  x in the figure below?
• A.

36

• B.

26

• C.

16

• D.

6

• 8.
• A.

110

• B.

105

• C.

100

• D.

95

• 9.
What must be the value of  x in the figure below?
• A.

68

• B.

66

• C.

64

• D.

62

• 10.
What must be the value of the number 5 in the figure below?
• A.

72

• B.

62

• C.

65

• D.

75

• 11.
What postulate proves that the triangles are congruent?
• A.

SSS

• B.

ASA

• C.

SSA

• D.

HL

• 12.
What postulate proves that the triangles are congruent?
• A.

SSS

• B.

ASA

• C.

SSA

• D.

HL

• 13.
What postulate proves that the triangles are congruent?
• A.

SSS

• B.

ASA

• C.

AAS

• D.

HL

• 14.
What postulate proves that the triangles are congruent aside from the SSA Postulate?
• A.

SSS

• B.

ASA

• C.

SAS

• D.

HL

• 15.
State what additional information is required in order to know that the triangles are congruent based on the SSS Postulate.
• A.

CB ≈ ZY

• B.

CB ≈ YX

• C.

AC ≈ YX

• D.

AC ≈ ZY

• 16.
State what additional information is required in order to know that the triangles are congruent based on the ASA Postulate.
• A.

CB ≈ FE

• B.

AC ≈ DF

• C.

AB ≈ DE

• D.

AC ≈ FE

• 17.
State what additional information is required in order to know that the triangles are congruent based on the SAS Postulate.
• A.

• B.

Angle BAC ≈ angle DAC

• C.

Angle CAB ≈ angle ACD

• D.

Angle BCD ≈ angle DAB

• 18.
State what additional information is required in order to know that the triangles are congruent based on the HL Postulate.
• A.

SQ ≈ VU

• B.

SR ≈ VU

• C.

SR ≈ VT

• D.

QR ≈ VT

• 19.
The pair of triangles below has two corresponding sides and angles marked congruent. Indicate the additional information needed to enable us to apply the SAS Congruence Postulate.
• A.

CA ≈ AC

• B.

• C.

BC ≈ DC

• D.

BD ≈ AC

• 20.
The pair of triangles below has two corresponding sides and angles marked congruent. Indicate the additional information needed to enable us to apply the ASA Congruence Postulate.
• A.

Angle BCA ≈ angle DCA

• B.

Angle BAC ≈ angle DAC

• C.