Triangles
Math ⇒ Geometry
Triangles starts at 6 and continues till grade 12.
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See sample questions for grade 7
A triangle has angles measuring 60°, 60°, and 60°. What type of triangle is this?
A triangle has sides of lengths 5 cm, 5 cm, and 8 cm. What type of triangle is it based on its sides?
A triangle has sides of lengths 6 cm, 8 cm, and 10 cm. Find its area.
A triangle has two angles measuring 50° and 60°. What is the measure of the third angle?
A triangle has sides of lengths 5 cm, 5 cm, and 8 cm. What type of triangle is it based on its sides?
A triangle has sides of lengths 6 cm, 8 cm, and 10 cm. Find its area.
A triangle has sides of lengths 7 cm, 24 cm, and 25 cm. Is this a right triangle?
A triangle has sides of lengths 9 cm, 12 cm, and 15 cm. Is this triangle a right triangle?
Which of the following is a correct statement about the medians of a triangle?
(1) All medians are equal in length.
(2) The medians always intersect at a single point.
(3) The medians never intersect.
(4) The medians are always perpendicular.
Which of the following is a property of an equilateral triangle?
(1) All angles are equal.
(2) All sides are equal.
(3) All angles are 60°.
(4) All of the above.
Which of the following is NOT a possible set of side lengths for a triangle?
(1) 2 cm, 2 cm, 5 cm
(2) 3 cm, 4 cm, 5 cm
(3) 6 cm, 7 cm, 8 cm
(4) 5 cm, 5 cm, 5 cm
Which of the following is NOT a property of an isosceles triangle?
(1) It has two equal sides.
(2) It has two equal angles.
(3) All sides are equal.
(4) The base angles are equal.
Fill in the blank: A triangle with exactly two equal sides is called an __________ triangle.
Fill in the blank: The area of a triangle is given by the formula Area = 1/2 × __________ × height.
Fill in the blank: The circumcenter of a triangle is the point where the three __________ bisectors meet.
Fill in the blank: The longest side of a right triangle is called the __________.
A triangle has sides of lengths 7 cm, 24 cm, and 25 cm. Is this a right triangle?
A triangle has sides of lengths 9 cm, 12 cm, and 15 cm. Is this triangle a right triangle?
True or False: All right triangles are isosceles triangles.
True or False: An equilateral triangle is also an acute triangle.
