Triangle ABP

An isosceles trapezoid ABCD is given. The length of side AB is 10 cm, the length of CD is 7 cm, and the height drawn to side AB is 4 cm. Point P is the foot of the altitude from A to side AD. Calculate the area of triangle ABP.

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Calculation of an isosceles triangle.
See also our trigonometric triangle calculator.

You need to know the following knowledge to solve this word math problem:

arithmetic

square root

planimetry

area of a shape
triangle
trapezoid

basic operations and concepts

reasoning

Grade of the word problem

practice for 12 year olds
practice for 13 year olds

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