#1
What is the sum of the interior angles of a triangle?
180 degrees
ExplanationThe sum of the interior angles of any triangle is always 180 degrees.
#2
In a right-angled triangle, what is the length of the hypotenuse if the legs are 3 and 4 units long?
5 units
ExplanationBy the Pythagorean theorem, the hypotenuse is calculated as sqrt(3^2 + 4^2) = 5 units.
#3
If two angles of a triangle are 45 degrees and 75 degrees, what is the measure of the third angle?
60 degrees
ExplanationThe sum of the interior angles of a triangle is always 180 degrees, so the third angle is 180 - 45 - 75 = 60 degrees.
#4
What is the perimeter of a rectangle with length 8 units and width 5 units?
36 units
ExplanationThe perimeter of a rectangle is calculated as 2(length + width), so for this rectangle, it is 2(8 + 5) = 36 units.
#5
In a trapezoid, what is the sum of its interior angles?
360 degrees
ExplanationThe sum of the interior angles of any convex polygon, including a trapezoid, is always 360 degrees.
#6
What is the area of a right-angled triangle with legs of length 6 units and 8 units?
24 square units
ExplanationThe area of a right-angled triangle is calculated as (1/2) * base * height, so for this triangle, it is (1/2) * 6 * 8 = 24 square units.
#7
What is the formula for the volume of a cylinder?
V = πr^2h
ExplanationThe formula for the volume of a cylinder is V = πr^2h, where r is the radius and h is the height.
#8
What is the formula for the area of a circle?
A = πr^2
ExplanationThe formula for the area of a circle is A = πr^2, where r is the radius.
#9
What is the measure of one interior angle in a regular hexagon?
60 degrees
ExplanationIn a regular hexagon, each interior angle measures 120 degrees, and half of that is 60 degrees.
#10
What is the volume of a cube with a side length of 3 units?
27 cubic units
ExplanationThe volume of a cube is calculated as the cube of its side length, so for this cube, it is 3^3 = 27 cubic units.
#11
In a right-angled triangle, what is the length of the shorter leg if the longer leg is 10 units and the hypotenuse is 12 units?
6 units
ExplanationUsing the Pythagorean theorem, the length of the shorter leg is sqrt(12^2 - 10^2) = 6 units.
#12
What is the sum of the exterior angles of a convex polygon?
360 degrees
ExplanationThe sum of the exterior angles of any convex polygon is always 360 degrees.
#13
If a rectangular prism has dimensions 4 units by 5 units by 6 units, what is its volume?
120 cubic units
ExplanationThe volume of a rectangular prism is calculated as the product of its three dimensions, so for this prism, it is 4 * 5 * 6 = 120 cubic units.
#14
What is the sum of the angles in a hexagon?
360 degrees
ExplanationThe sum of the interior angles of any hexagon is always 360 degrees.
#15
In a parallelogram, what is the relationship between opposite angles?
They are congruent
ExplanationOpposite angles in a parallelogram are equal or congruent.
#16
What is the formula for the surface area of a sphere?
A = 4πr^2
ExplanationThe formula for the surface area of a sphere is A = 4πr^2, where r is the radius.
#17
What is the measure of an exterior angle of a regular pentagon?
36 degrees
ExplanationIn a regular pentagon, each exterior angle measures 72 degrees, and half of that is 36 degrees.
#18
What is the relationship between the radius and diameter of a circle?
Radius = 2 * Diameter
ExplanationThe relationship between the radius and diameter of a circle is that the radius is half of the diameter, expressed as Radius = 2 * Diameter.
#19
In a kite, how are the lengths of the two pairs of adjacent sides related?
They are equal
ExplanationIn a kite, the lengths of the two pairs of adjacent sides are equal, forming two pairs of congruent adjacent sides.