Tags » Geometry

Hands-on Critical Thinking: Equilateral Triangles

About a month ago, I was working with my Geometry class on equilateral triangles. Using a ruler and a compass, I demonstrated how to construct an equilateral triangle. 435 more words

Best Practices

Area and Volume

Let’s say you have two similar prisms, A and B. The surface area of A is 161 square centimeters, and its volume is 1331 cubic centimeters. 839 more words


Introduction to 3-D with Polyhedron Nets and Islamic Design

A couple weeks ago, I was planning for our last unit in geometry which is 3 dimensional solids, and as I was measuring nets and counting vertices, edges, and faces, I suddenly realized I was really bored. 582 more words


Ratio of diagonals of cyclic quadrilateral (TOMATO 110)

Let ABCD be a cyclic quadrilateral with lengths of sides AB = p , BC = q , CD = r, and DA = s . 50 more words

I.S.I. And C.M.I. Entrance Corner

The Equation of a Circle

Expressing Geometric Properties with Equations

G-GPE.A Translate between the geometric description and the equation for a conic section

  1. Derive the equation of a circle of given center and radius using the Pythagorean Theorem; complete the square to find the center and radius of a circle given by an equation.
  2. 749 more words

Angles adding up to 180 degree

Statement: ABC be an isosceles triangle with AB = AC. P be a point inside the triangle such that, . Suppose M is the midpoint of BC. 66 more words

Math Olympiad Corner