How to find the area of an acute / obtuse triangle

Practice Questions

Intermediate Geometry › How to find the area of an acute / obtuse triangle

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1

In the figure, a triangle that shares its base with the width of the rectangle has a height that is half the length of the rectangle. Find the area of the shaded region.

1

2

A triangle is placed in a parallelogram so they share a base.

1

If the height of the triangle is half that of the parallelogram, find the area of the shaded region.

3

In the figure, a triangle that shares its base with the width of the rectangle has a height that is half the length of the rectangle. Find the area of the shaded region.

2

4

A triangle is placed in a parallelogram so that they share a base.

2

If the height of the triangle is one-fifth of that of the parallelogram, find the area of the shaded region.

5

A triangle is placed so that it shares a base with a parallelogram.

3

If the height of the triangle is one-third that of the parallelogram, find the area of the shaded region.

6

In the figure, a triangle that shares its base with the width of the rectangle has a height that is half the length of the rectangle. Find the area of the shaded region.

3

7

In the figure, a triangle that shares its base with the width of the rectangle has a height that is half the length of the rectangle. Find the area of the shaded region.

4

8

Find the area of the triangle below. Round to the nearest tenths place.

4

9

Find the area of the triangle below. Round to the nearest tenths place.

2

10

A triangle is placed in a parallelogram so that they share a base.

4

If the height of the triangle is half that of the parallelogram, find the area of the shaded region.

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