Triangles
Math ⇒ Geometry
Triangles starts at 6 and continues till grade 12.
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See sample questions for grade 8
A triangle has angles measuring 30°, 60°, and 90°. What is the special name for this triangle?
A triangle has angles measuring 60°, 60°, and 60°. What type of triangle is this?
A triangle has sides of length 3 cm, 4 cm, and 5 cm. What is the area of the triangle?
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 two angles measuring 70° and 40°. What is the measure of the third angle?
A triangle has vertices at (0,0), (4,0), and (0,3). What is its area?
If a triangle has angles measuring 80°, 50°, and 50°, what type of triangle is it based on its sides?
A triangle has vertices at (0,0), (4,0), and (0,3). What is its area?
Which of the following is a property of an isosceles triangle?
(1) All sides are equal
(2) Two sides are equal
(3) All angles are equal
(4) No sides are equal
Which of the following is NOT a property of a scalene triangle?
(1) All sides are of different lengths
(2) All angles are of different measures
(3) It has two equal sides
(4) No sides are equal
Which of the following is NOT a property of an equilateral triangle?
(1) All sides are equal
(2) All angles are equal
(3) Each angle is 60°
(4) It has one right angle
Which of the following is NOT a type of triangle based on its angles?
(1) Acute triangle
(2) Obtuse triangle
(3) Right triangle
(4) Isosceles triangle
Fill in the blank: A triangle with all sides of different lengths is called a __________ triangle.
Fill in the blank: A triangle with one angle equal to 90° is called a __________ triangle.
Fill in the blank: The altitude of a triangle is a line segment from a vertex perpendicular to the __________ side.
Fill in the blank: The line segment joining a vertex of a triangle to the midpoint of the opposite side is called a __________.
A triangle has sides of length 7 cm, 24 cm, and 25 cm. Is this triangle a right triangle?
A triangle has sides of length 8 cm, 15 cm, and 17 cm. Is this a right triangle?
If a triangle has sides of length 9 cm, 12 cm, and 15 cm, is it a right triangle?
True or False: An obtuse triangle has one angle greater than 90 degrees.
