Adaptive Practice
Triangles
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Question 1 of 10
⏱ 0:30
Easy
In a triangle, the sum of the interior angles is always:
Medium
If two sides of a triangle are 5 cm and 7 cm, which of the following cannot be the length of the third side?
Easy
In triangle ABC, if ∠A = 40° and ∠B = 60°, what is the measure of ∠C?
Medium
Which of the following sets of side lengths can form a triangle?
Easy
In an isosceles triangle, the base angles are 50° each. What is the vertex angle?
Medium
The sides of a triangle are in the ratio 3:4:5. If the perimeter is 36 cm, find the length of the longest side.
Medium
In triangle ABC, if AB = AC and ∠B = 40°, then what is the measure of ∠A?
Medium
In triangle PQR, if PQ = 8 cm, QR = 6 cm, and PR = 10 cm, what type of triangle is it?
Medium
The area of an equilateral triangle with side 6 cm is:
Hard
In triangle XYZ, if XY = 7 cm, YZ = 24 cm, and XZ = 25 cm, find the length of the altitude from Y to XZ.