Area of Triangles

Which of the following is the correct formula to find the area of a parallelogram?

Find the area of the parallelogram.

• 12 units²
• 10 units²
• 13 units²
• 6 units

Find the area of the parallelogram in square inches.

Type only the numerical answer with no units.

What is the area of the parallelogram in square centimeters?

Type only the numerical answer with no units.

Tags

CCSS.6.G.A.1

Which of the following is the correct formula to find the area of a triangle?

True or False? Any side of a triangle can be the base side.

• True--it doesn't have to be the bottom side in the orientation of the triangle. You can turn the triangle until the base is the bottom if you want.

• False--the base can only be the side on the bottom.

A triangle height has to be ______ to its base.

• parallel (lines that would never intersect)

• criss crossed

• perpendicular (meeting at a right angle)

• curved

We know we can use ANY triangle side as the base, so long as we have a height marked perpendicular (at a right angle) to it.

Which side would be the best to use as the base of this triangle?

• 18 cm

• 14 cm

• 8 cm

• 6 cm

What is the area of this triangle?

• 14 units²

• 24 units²

• 48 units²

• 20 units²

Find the area of the triangle.

• 11.5 square units

• 21 square units

• 28 square units

• 14 square units