Blog

By adding one horizontal line to the diagram, find the value of x:     Click ‘True’ when finished

Without using dot products, determine whether the angle XYZ is a right angle, if X = (3, -5, 4); Y = (-2, -2, -2) and Z = (1, 5, -1)     Click ‘True’ when finished

A triangle is drawn with angles 31 degrees at vertex A and 51 degrees at vertex B.  If an altitude is drawn from the third vertex C and is extended until it intersects a line parallel to CA at point D, find the measure of angle BDC.   Click ‘True’ when finished

If the midpoints of the three sides of a triangle are given as (2, 6) (-6, 4) and (10, -2), find the locations of the three vertices.   Click ‘True’ when finished

What is {x} + {y} with the correct number of significant figures?

In the periodic table elements are sorted into rows and columns, what are these rows and columns called?

What is the particle that defines which element an element is?

Light, composed of _______ is emitted when an _______ transitions from a higher energy _______ To a lower energy one.

You are Democritus

Match the particle to it’s properties