Congruence & Similarity MCQ Test — Class 8 IB MYP

Solution:

Congruent shapes have the same shape and size.

Solution:

Similar shapes have the same shape but may differ in size.

Solution:

ASA = Angle-Side-Angle.

Solution:

SSS = Side-Side-Side. All three sides must match.

Solution:

All corresponding sides are equal, so the triangles are congruent by SSS.

Solution:

Scale factor 2 means every length is multiplied by 2.

Solution:

Similar triangles have equal corresponding angles.

Solution:

Scale factor = 2. — \text{Length} = 6 \times 2 = 12 \text{ cm}

Solution:

AAA proves similarity but not congruence (triangles could be different sizes).

Solution:

New dimensions: — 10 \times 3 = 30, \; 15 \times 3 = 45