Topic 11 Geometry Review

All sides are the same length

• Isosceles

• Equilateral

• Scalene

One angle is a right angle

• obtuse triangle

• right triangle

• acute triangle

At least two sides are the same length

• equilateral triangle

• scalene triangle

• isosceles trangle

One angle is an obtuse angle

• right triangle

• acute

• obtuse triangle

• scalene triangle

All three angles are acute angles

• obtuse triangle

• acute triangle

• right triangle

Use the angles to classify the triangles

all angles less than 90° - acute triangle

1 angle is equal to 90° - right triangle

1 angle is greater than 90° - obtuse triangle

Use the sides to identify the triangle

0 sides the same - scalene triangle

2 sides the same - isosceles triangle

3 sides the same - equilateral triangle

Use the sides to identify the triangle

0 sides the same - scalene triangle

2 sides the same - isosceles triangle

3 sides the same - equilateral triangle

Tags

CCSS.5.G.B.3

CCSS.5.G.B.4

Use the sides to identify the triangle

0 sides the same - scalene triangle

2 sides the same - isosceles triangle

3 sides the same - equilateral triangle

Tags

CCSS.5.G.B.3

CCSS.5.G.B.4

Use the sides to identify the triangle

0 sides the same - scalene triangle

2 sides the same - isosceles triangle

3 sides the same - equilateral triangle

Tags

CCSS.5.G.B.3

CCSS.5.G.B.4