Geometry → Two-dimensional geometric shapes → Triangle
MR-1

The two hypotenuses of a right triangle are 8 cm and 6 cm. Calculate the perimeter and area of the triangle.
MR-683 / 3.

In an acute triangle with a base of 10 cm and a height corresponding to the base of 8 cm, a rectangle is inscribed whose two vertices belong to the base of the triangle, and the other two on the other two sides. If the area of the rectangle is 15 cm2, calculate its sides.
MR-696 / 15.

Calculate the area of an isosceles triangle with a base of 12 cm, if the height corresponding to the base is equal to the segment joining the midpoints of the base and the leg.