# Surf for More Math

## Lesson 2 **- Investigating Properties of Triangles**

To encourage your child to have fun on the Web
while learning about Investigating Properties of Triangles, here are
some games and interactive activities they can do on their own or in
pairs.

**Goal**

Investigate angle and side relationships of triangles.

**Builds Upon**

Student Book page 212

**Instructions for Use**

** **

Sorting
Triangles** **allows your child to identify and sort
triangles by type.

To use Sorting Triangles, drag and drop each triangle in the correct
location in the Venn diagram. Click the 'Next' button, to sort the triangles
using different properties.

** **

** **

Identifying
Triangles by Their Sides lets your child select the type of triangle
based on their sides.

To use Identifying Triangles by Their Sides, click the 'Start' button.
Read the description of the side lengths, then and press the 'Equilateral',
Isosceles', or 'Scalene' button. Feedback is provided for each answer
submitted.

Identifying
Types of Triangles by Angles lets your child select the type of
triangle based on the size of angles.

To use Identifying Types of Triangles by Angles, click the 'Start'
button. Read the description of the angles sizes, and then press the
'Right', Obtuse', or 'Acute' button. Feedback is provided for each answer
submitted.

Classifying
Triangles lets your child select a type of triangle based on its
properties.

To use Classifying Triangles, click each type of triangle to identify
its properties. Press the 'Click to Test Your Understanding' button.
A triangle will appear with the size of angles and side lengths. Select
the description for each triangle.