Vocabulary
Lines that cross each other at 90 degree angles.
What are perpendicular lines?
A quadrilateral with 4 congruent sides, 4 right angles, and 2 sets of parallel sides
What is a square?
A triangle with all equal sides
What is an equilateral triangle?
A three dimensional figure with one circular face, one vertex, and one edge
What is a cone?
Multiply: 2/3 x 5/7
10/21
Two figures that are exactly the same size and shape
What are congruent figures?
A quadrilateral with opposite sides having the same length, four right angles, and 2 sets of parallel sides
What is a rectangle?
A triangle that has a right angle
What is a right triangle?
A three dimensional figure with two circular faces and two edges
What is a cylinder?
Simplify: 34/7
4 and 6/7
A figure with 3 or more straight closed sides
What is a polygon?
A quadrilateral with exactly one set of parallel sides
What is a trapezoid?
A triangle that has all angles less than 90 degrees
What is an acute triangle?
A three dimensional figure with 6 square faces, 8 vertices, and 12 edges
What is a cube?
Divide: 5 รท 1/4
20
The name of the angle that is 90 degrees
What is a right angle?
A quadrilateral 2 sets of parallel sides
What is a parallelogram?
A triangle that has one right angle and 2 sides that are congruent.
What is an obtuse isosceles triangle?
A three dimensional figure with 5 faces, 5 vertices, and 8 edges.
What is a square pyramid?
Add: 1/4 + 3/8
5/8
When two line extend in either direction but never cross intersect or cross
What are parallel lines?
A quadrilateral with four congruent sides, two sets of parallel sides, and typically (but no always) has 2 acute angles and 2 obtuse angles
What is a rhombus?
A triangle that has one angle bigger than 90 degrees and no congruent sides.
What is an obtuse scalene triangle?
A three dimensional figure with no faces, no vertices, and no edges.
Subtract: 5/8 - 1/3
7/24