3rd PERIODICAL TEST - GRADE 8 - MATHEMATICS

What triangle congruence postulate states that 'If the two angles and the included side of one triangle are congruent to the corresponding two angles and an included side of another triangle, then the triangles are congruent'?

• A. SSS

• B. SAS

• C. ASA

• D. AAS

How many pairs of corresponding congruent angles are there in two congruent triangles?

• A. 1

• B. 3

• C. 2

• D. 4

Which of the following is NOT a property of Mathematical system?

• A. conjecture

• B. postulates

• C. define terms

• D. theorems

Which of the following is a symbol used for congruence?

• A. =

• B. ≈

• C. ≠

• D. ≅

Which of the following is TRUE about the figure at the right?

• A. 𝐸𝐷 ⊥ 𝐷𝐺

• B. 𝐹𝐺 ⊥ 𝐸𝐺

• C. 𝐹𝐷 ⊥ 𝐸𝐺

• D. 𝐺𝐸 ⊥ 𝐸𝐹

What do you call the statements that are assumed to be true and do not need proof?

• A. axioms

• B. defined terms

• C. theorems

• D. undefined terms

Angels inside the triangular garden ABC are all 60°. To be able to find the length of the sides of the garden, Mary measured the sides as follows; 2.5 𝑚, 3 𝑚 and 5 𝑚. Did Mary measure it correctly?

• A. No, because an equiangular triangle is also equilateral.

• B. No, because two sides of an equiangular triangle must be equal.

• C. Yes, because a triangle is not equilateral if it is equiangular.

• D. Yes, because not all equiangular triangles are equilateral.

Given that ΔABC ≅ ΔDEF, what angle corresponds to ∠A?

• A. ∠B

• B. ∠D

• C. ∠C

• D. ∠F

What axiom of equality is represented by the illustration?

• A. transitive property

• B. reflexive property

• C. symmetric property

• D. substitution property

Which of the following properties justifies the statement 𝐵𝐷 ≅ 𝐵𝐷?

• A. Equivalence

• B. Symmetric

• C. Reflexive

• D. Transitive