Online Test — Triangles
10 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 10
Which triangle has all sides equal?
Scalene
Isosceles
Equilateral
Right
Explanation: Equilateral triangle has three equal sides
Question 2 of 10
The sum of angles in any triangle is:
90°
180°
270°
360°
Explanation: Angle sum property: 180°
Question 3 of 10
An exterior angle of a triangle equals the sum of:
All three interior angles
Two adjacent interior angles
Two remote interior angles
One interior angle
Explanation: Exterior angle property
Question 4 of 10
Which condition is NOT a congruence condition?
SSS
SAS
AAA
ASA
Explanation: AAA proves similarity, not congruence
Question 5 of 10
A triangle with angles 40°, 50°, 90° is:
Acute
Right
Obtuse
Equilateral
Explanation: One angle is exactly 90°
Question 6 of 10
The median of a triangle joins a vertex to:
Opposite vertex
Opposite side's midpoint
Any point on opposite side
The centroid
Explanation: Median goes to midpoint of opposite side
Question 7 of 10
Which of these can be the sides of a triangle?
2,3,6
3,4,5
1,2,4
2,2,5
Explanation: Triangle inequality: sum of two sides > third (3+4>5, etc.)
Question 8 of 10
In an isosceles triangle, angles opposite equal sides are:
Supplementary
Equal
Complementary
Different
Explanation: Base angles are equal in isosceles triangle
Question 9 of 10
The point where medians intersect is called:
Orthocenter
Centroid
Circumcenter
Incenter
Explanation: Centroid is intersection of medians
Question 10 of 10
In \(\triangle ABC\), \(\angle A = 60°\), \(\angle B = 50°\). Find \(\angle C\).
50°
60°
70°
80°
Explanation: \(180° - (60°+50°) = 70°\)