The area of the rectangle is the length multiplied by the width. The length and width of the rectangle are the base and perpendicular height of the triangle, they are at right-angles to each other.

In the triangle above, segment BD is an angle bisector. Sides AB = 9x − 14, BC = 4x − 3, CD = 2x + 11 and AD = 5x + 2. Find the area of triangle ABD and the measure θ. Area ΔABD ...

If a triangle and a parallelogram are on the same base and between the same parallels, the area of the triangle is equal to one-half area of the parallelogram. Question: Complete the following ...