MathematicsClass 9en

📐 Triangle Congruence and Properties

This quiz covers the essential concepts of triangle congruence, congruence criteria, and key properties of triangles used in geometry. **What you'll learn:** - Identify and apply the four main congruence criteria (SSS, SAS, ASA, RHS) - Understand the relationship between congruent triangles and their corresponding parts - Apply properties of isosceles and equilateral triangles - Solve problems involving angle sums and exterior angles of triangles

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Questions in this quiz

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Question 1
What is the sum of all interior angles in any triangle?
Question 2
Two triangles are congruent if they have the same area.
Question 3
Which congruence criterion requires all three sides of one triangle to be equal to the three sides of another?
Question 4
In an isosceles triangle, which angles are always equal?
Question 5
If triangle $ABC$ is congruent to triangle $DEF$ (written as $\triangle ABC \cong \triangle DEF$ ), then angle $A$ corresponds to angle ___, side $BC$ corresponds to side ___, and angle $C$ corresponds to angle ___.
Question 6
An exterior angle of a triangle equals the sum of which two angles?
Question 7
Which congruence criterion is specifically used for right-angled triangles?
Question 8
In an equilateral triangle, all three angles measure $60°$ each.
Question 9
If $\triangle PQR \cong \triangle XYZ$ and $PQ = 5$ cm, $QR = 7$ cm, and $PR = 8$ cm, what is the length of side $YZ$ ?
Question 10
Two triangles have sides $3$ cm, $4$ cm, $5$ cm and $6$ cm, $8$ cm, $10$ cm respectively. Are these triangles congruent?