7th Grade Math Geometry Review Answer Key

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#1 An angle greater than 0 and less than 90 degrees. acute angle
#2 Two angles that equal 180 degrees. supplementary angles
#3 An angle is divided in half by a ___________. bisector
#4 This forms angles by intersecting two or more lines. transversal
#5 Angles that are opposite and congruent. vertical angles
#1 A triangle in which all sides are congruent. equilateral triangle
#2 A triangle in which no sides are congruent. isosceles triangle
#3 Perimeter of a triangle with sides 4, 7, and 8 cm. 19 cm
#4 Area of a triangle with base of 12 ft. and height of 4 ft.? 24 square feet
#5 Find the missing angle of a triangle with angles of 47 degrees and 52 degrees. 81 degrees
#1 Find the perimeter of a square with sides of 12 inches. 48 inches
#2 This is a quadrilateral with all congruent sides and all congruent angles. square
#3 This is a quadrilateral with only one set of parallel lines. trapezoid
#4 A rectangular piece of land has a perimeter of 300 ft. If one side is 50 ft., what are the lengths of the other 3 sides? 50 ft., 100 ft., and 100 ft.
#5 Find the area of a trapezoid with bases of 4' and 5' and height of 6'. 27 square feet
#1 The distance from the center to the outer edge of a circle. radius
#2 The perimeter of a circle is called this. circumference
#3 Find the circumference of a circle with a radius of 2 meters. 12.56 meters
#4 Find the area of a circle with a diameter of 20 cm. 314 square cm
#5 Circumference divided by the diameter equals this. pi
#1 Objects existing in two dimensions; having What is Two-dimensional objects
#2 Objects existing in three dimensions; having length, width, and height What is Three-dimensional objects
#3 A figure in space with three or more triangular faces and a base in the shape of a polygon What is Pyramid
#4 The measure of space occupied by it. It is measured in cubic units such as cubic centimeters. What is volume
#5 A solid figure that has two congruent, parallel circles as it bases. As with prisms, the area of the base tells the number of cubic units in one layer. What is cylinder
Final Question
The circumference of a circle is 6.28 meters. What is the area of this circle? 3.14 square meters