Triangles — Practice Quiz
Madhya Pradesh Board · Class 9 · Mathematics
Try a 4-question quiz on Triangles for Madhya Pradesh Board Class 9 Mathematics: tap an answer to check it and see why.
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Quick Quiz: Triangles
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What does the term 'congruent' mean when referring to geometric figures?
In the SAS congruence rule, what does 'S' stand for?
In an isosceles triangle, if two sides are equal, then the angles opposite to these equal sides are:
What is the sum of all angles in any triangle?
Sample Questions
Which of the following are valid congruence rules for triangles?
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SAS (Side-Angle-Side), ASA (Angle-Side-Angle), SSS (Side-Side-Side), RHS (Right angle-Hypotenuse-Side)
The valid congruence rules are SAS, ASA, SSS, AAS, and RHS. AAA is not a valid congruence rule because triangles with equal angles can have different sizes (they are similar but not necessarily congruent).
Which of the following statements about congruent triangles are correct?
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Corresponding sides are equal, Corresponding angles are equal, They have the same area, They have the same perimeter
Congruent triangles have all corresponding parts equal (CPCT). This means equal sides, equal angles, and consequently equal area and perimeter. However, congruent triangles don't have to be right triangles.
In the ASA congruence rule, the side must be:
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The side included between the two equal angles
In ASA congruence rule, the side must be included between the two equal angles. This is crucial for the rule to work - if the side is not between the equal angles, the triangles may not be congruent.
Each angle of an equilateral triangle measures:
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60°
In an equilateral triangle, all three sides are equal, so all three angles are also equal. Since the sum of angles in a triangle is 180°, each angle measures 180° ÷ 3 = 60°.
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