Plane Geometry Review

Front

How do you find the area of a triangle?

Back

Multiply base times height then divide by two.

Front

What is the height of this triangle if the base is 12 cm and the area is 54 square cm?

Back

9 cm

Front

True or False: Sides in similar figures must be proportional.

Back

True

Front

If the scale factor is greater than one, what happens to the new figure?

Back

It will be an enlargement.

Front

What is the formula for the area of a triangle?

Back

Area = (base × height) / 2

Front

What is the area of a rectangle with a length of 10 cm and a width of 5 cm?

Back

50 square cm.

Front

What is the perimeter of a triangle with sides measuring 3 cm, 4 cm, and 5 cm?

Back

12 cm.

Front

What do you call a polygon with four sides?

Back

Quadrilateral.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

What is the scale factor if a triangle with a base of 4 cm is enlarged to a base of 8 cm?

Back

2.