Recognizing triangle types

The topic  appears under the 7th Grade Math Mission. This exercise practices the language of triangles including classification by sides and angles.

Types of Problems
There are three types of problems in this exercise:


 * 1) Select the correct category: This problem provides a chart with several triangles and two columns of possible classifications. The student is asked to correctly select the button to indicate which category is correct for each triangle.Rtt1.png
 * 2) Select the correct properties: This problem has a single triangle drawn and a list of several properties that may be true about the triangle. The student is asked to select all options from the list that are true about the triangle.Rtt2.png
 * 3) Select the correct names: This problem provides a specific triangle and asks the student to select all appropriate names from a multiple select list.Rtt3.png

Strategies
Knowledge of the triangle vocabulary, specifically related to classification by sides or angles, is useful for this problem.
 * 1) Triangles are called acute, obtuse or right based on the measure of their largest angle.
 * 2) Triangles are called equilateral, isosceles or scalene based on the number of congruent sides (three, at least two, or none respectively).
 * 3) An equilateral triangle is automatically isosceles, as well as certain acute.