How many degrees are in a straight angle?

• 90°

• 180°

• 270°

• 360°

Answer explanation

In geometry, a straight angle is defined as an angle that is equal to 180 degrees. The reason it is called a straight angle is because it appears as a straight line.

What do you call an angle greater than 90 degrees but less than 180 degrees?

• Obtuse Angle

• Reflex Angle

• Right Angle

• Acute Angle

Answer explanation

Obtuse angle means an angle whose measure is greater than 90° and less than 180°. In other words, an obtuse angle is an angle between a right angle and a straight angle.

Which of the following shapes has no angles?

• Rectangle

• Diamond

• Square

• Circle

Answer explanation

The set of points in a plane equidistant form a given point(the center of the circle. It has no angle.

What is the name for a triangle with three unequal sides?

• Isoceles Triangle

• Right Triangle

• Scalene Triangle

• Equilateral Triangle

Answer explanation

A scalene triangle is a triangle with all three sides of different lengths. In a scalene triangle, there are no equal side lengths and no equal angle measurements.

What is the measure of each interior angle in a regular hexagon?

• 90°

• 120°

• 180°

• 360°

Answer explanation

A regular hexagon is defined as a closed 2D shape made up of six equal sides and six equal angles. Each angle of the regular hexagon measures 120°.

What is the term for a line segment that connects 2 nonadjacent. vertices of a polygon?

• Median

• Diagonal

• Altitude

• Perpendicular

Answer explanation

In geometry, a diagonal is a line segment joining two vertices of a polygon or polyhedron, when those vertices are not on the

same edge. Informally, any sloping line is called diagonal.

What is the name for a quadrilateral with exactly two pairs of parallel sides?

• Trapezoid

• Rhombus

• Square

• Rectangle

Answer explanation

Trapezoids are quadrilaterals that have two parallel sides and two non-parallel sides.

What is the name for a three-dimensional figure with six congruent square faces?

• Cylinder

• Cube

• Pyramid

• Sphere

Answer explanation

What is the name for a three-dimensional figure with six congruent square faces?

Which of the following is the formula for the area of a triangle?

• A=l × w

• A= 1/2 bh

• A=b × h × r

• A= 1/2 lwh

Answer explanation

The area of a triangle is defined as the total region that is enclosed by the three sides of any particular triangle. Basically, it is equal to half of the base times height, i.e. A = 1/2 × b × h. Hence, to find the area of a tri-sided polygon, we have to know the base (b) and height (h) of it.

What is the term for a line segment that intersects two sides of a triangle?

• Bisector

• Median

• Altitude

• Perpendicular

Answer explanation

In geometry, an altitude of a triangle is a line segment through a given vertex (called apex) and perpendicular to a line containing the side or edge opposite the apex.