4th Grade Geometry

Select all answers that describe triangles according to side length relationships.

• trapezoid

• isosceles

• scalene

• acute

• equilateral

An angle that measures 89° is classified as ________ .

• right

• straight

• acute

• obtuse

Select all that apply.

A square is also classified as a:

• rhombus

• parallelogram

• trapezoid

• rectangle

• quadrilateral

Select the shapes that can have at least one pair of parallel sides.

• rectangle

• rhombus

• trapezoid

• triangle

• square

The measurements of interior angles of a triangle add up to 180º.

Triangle ABC is a right triangle with a right angle at vertex A.

What must be true of the angles at vertex B and vertex C ?

• The angles at vertex B and vertex C are both acute.

• The angles at vertex B and vertex C are equal.

• The angles at vertex B and vertex C are both right.

• The angles at vertex B and vertex C add up to 90º.

• 84º

• 26º

• 36º

• 74º

This triangle can be classified as:

• obtuse

• scalene

• equilateral

• acute

• right

Which shapes have at least one pair of perpendicular line segments?

• 
• 
• 
• 

 What is the name of this polygon?

• a pentagon
• a quadrilateral
• an octagon
• a triangle

Angles that have a measure less than 90 degrees are called _____ ______.

• acute angles
• obtuse angles
• right angles
• straight angles