Recognizing angles

The first instance of  is under the 4th Grade Math Mission. This exercise practices classifying angles based on their measure as acute, right or obtuse.

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


 * 1) Type of angle in polygon: This problem has a polygon and the student has a couple tasks. First of all, they need to select how a particular angle compares to 90. Then they have to name that type of angle.TA3.png
 * 2) Type of angle in picture: This problem has a picture with an angle drawn in green. The student selects the type of angle that is in green.TA1.png
 * 3) Select the angles: This problem has two intersecting lines drawn and the student is supposed to select all angles that are of a certain given type.TA2.png

Strategies
This exercise is easy to get accuracy badges as long as you know the acute, right and obtuse vocabulary. It is also easy to get speed badges because there are generally only three possibilities for most problems and any diagrams are easy to view and interpret.


 * 1) Concentrate on the green on problem type two. The picture is worth it!
 * 2) On problem type three the congruent angles are vertical angles. Therefore the answer will either be A and C, or it will be B and D (unless they eventually change the labels to give an extra wrinkle).