Triangles
Math ⇒ Geometry
Triangles starts at 6 and continues till grade 12.
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See sample questions for grade 9
A triangle has angles in the ratio 2:3:4. What are the measures of the angles?
A triangle has sides of length 5 cm, 5 cm, and 8 cm. What type of triangle is it based on its sides?
A triangle has sides of length 9 cm, 12 cm, and 15 cm. Calculate its area using Heron's formula.
A triangle has two equal angles of 70°. What is the measure of the third angle?
A triangle has two sides of length 7 cm and 10 cm. What is the range of possible lengths for the third side?
Explain why the sum of the angles in a triangle is always 180°.
If a triangle has angles measuring 90°, 60°, and 30°, what type of triangle is it?
If the area of a triangle is 24 cm² and its base is 8 cm, what is its height?
If the perimeter of an equilateral triangle is 21 cm, what is the length of each side?
If the sides of a triangle are 5 cm, 12 cm, and 13 cm, what is the length of the hypotenuse?
In a triangle, if two angles are 45° and 55°, what is the measure of the third angle?
State the Pythagoras Theorem.
What is the name of the point where the three altitudes of a triangle meet?
What is the sum of the exterior angles of any triangle, one at each vertex?
Which formula is used to calculate the area of a triangle?
