Inside Triangle Measurements

Can the following 3 numbers be side measures of a triangle

3, 10, 8

• Yes

• No

Can the following 3 numbers be side measures of a triangle

10, 18, 10

• Yes

• No

Can the following 3 numbers be side measures of a triangle

• Yes

• No

Can the following 3 numbers be side measures of a triangle

11, 12, 9

• Yes

• No

Can the following 3 numbers be side measures of a triangle

5, 8, 4

• Yes

• No

Can the following 3 numbers be side measures of a triangle

8, 2, 8

• Yes

• No

Can the following 3 numbers be side measures of a triangle

• Yes

• No

What is unique about an acute triangle?

• All angle measurements are less than 90 degrees.

• All angle measurements are greater than 90 degrees.

• One angle is exactly 90 degrees.

What is unique about an obtuse triangle?

• One angle is exactly 90 degrees.

• One angle is less than 90 degrees.

• One angle is greater than 90 degrees.

What is the formula for area of a triangle?

• A = length x width

• A = 1/2 (b x h)

• P = s + s + s + s