Question

classifying two - dimensional figures mastery check miguel classifies triangles based on their angles. acute obtuse right shape 1 shape 2 shape 4 shape 3 which shape is not classified correctly? a shape 1 b shape 2

Explanation:

Step1: Recall triangle - angle definitions

An acute - angled triangle has all angles less than 90°. An obtuse - angled triangle has one angle greater than 90°. A right - angled triangle has one angle equal to 90°.

Step2: Analyze Shape 1

Shape 1 has all angles less than 90°, so it is an acute - angled triangle and is classified correctly.

Step3: Analyze Shape 2

Shape 2 has one angle greater than 90°, so it is an obtuse - angled triangle and is classified correctly.

Step4: Analyze Shape 3

Shape 3 has one angle greater than 90°, so it is an obtuse - angled triangle and is classified correctly.

Step5: Analyze Shape 4

Shape 4 has one angle equal to 90°, so it is a right - angled triangle and is classified correctly.

Answer:

None of the above (since all shapes are classified correctly)