Angles Classify

Which angle measures exactly 180 degrees?

• Right Angle

• Straight Angle

• Obtuse Angle

• Reflex Angle

Classify the triangle.

• Equilateral Acute

• Isosceles Right

• Isosceles Obtuse

• Scalene Right

ALL equilateral triangles are also acute triangles.

• True

• False

angles measure more than 180 degrees but less than 360 degrees.

• Acute

• Obtuse

• Reflex

• Straight

A triangle's sides measure 3 cm, 5 cm, and 7 cm. Its angles measure 110, 30 and 40 degrees. Classify the triangle.

• Scalene Obtuse

• Isosceles Right

• Scalene Acute

• Isosceles Obtuse

A triangle has 2 angles that measure 45 degrees. What is the measure of the 3rd angle?

• 45 degrees

• 90 degrees

• 180 degrees

• 190 degrees

Classify this triangle.

• Isosceles Obtuse

• Isosceles Acute

• Scalene Obtuse

• Scalene Acute

An obtuse triangle has _____ obtuse angle(s).

• 0

• 1

• 2

• 3

The Angle is 90°.

so it is a:

• Acute Angles

• Obtuse Angles

• Right Angles

The Angles is

Than 0° and less than 90°.

so it is a:

• Acute angles

• Obtuse angles

• Right angles