Bell Work

Order the side lengths from least

to greatest.

Order the angle measurements from least to

greatest.

A

B

C65°

62°

53°

A

B

C7 in.

10 in.

9 in.

Note: The figures are not drawn to scale.

<B, <A, <C

AB, AC, and BC

Work in your groups to complete the Angles Exploration Activity Worksheet.

You will need 11 pieces of patty paper for your group. Make sure you use PENCIL when drawing the angles.

Team leaders are in charge of keeping their group on task.

Be prepared to share your results at the end of the period.

If your group finishes early raise your hand, and I will give you your practice worksheet.

Angles Exploration Activity

In order to form a triangle, the sum of the angles has to equal 180°.

You can create an INFINITE number of triangles using the same angle measurements.

What did you find out?

Finding an Angle Measure in a Triangle

Find the value of x in the triangle shown.

26

83 x

We know that:x + 83 + 26 =

180x + 109 = 180 -109 -109 x = 71

So, the value of x is 71°.

You Try

Find the value of x in the triangle shown.

26

92 x

We know that:x + 92 + 26 = 180x + 118 = 180 -118 -118 x = 62

So, the value of x is 71.

Practice:Worksheet