Medians, altitudes and bisectors: name them, and find where they meet
Grade 10 Math Worksheet

Circle the best answer, or write your answer on the line.
Milo traces watermelon slice DFH with centroid G on median DQ. DG = (5x − 1) cm and GQ = (2x + 5) cm. How long is DQ, in cm?
Noah traces cheese wedge DFH with centroid G on median DQ. DG = (6x − 12) inches and GQ = (x + 8) inches. How long is DQ, in inches?
Sketch, not to scale: triangle DFH; median DQ from D to Q, the midpoint of FH; centroid G on DQ. DG is labeled 6x − 12; GQ is labeled x + 8. Sketch, not to scale: triangle DFH; median DQ from D to Q, the midpoint of FH; centroid G on DQ. DG is labeled 6x − 12; GQ is labeled x + 8. 6x - 12 x + 8 D F H Q G Not to scale. Pia leans a ladder on a wall, making right triangle DFH with the right angle at F. Where is the circumcenter of triangle DFH?
Sketch, not to scale: right triangle DFH with the right-angle mark at F; DH is the longest side. Sketch, not to scale: right triangle DFH with the right-angle mark at F; DH is the longest side. F D H Not to scale - inside the triangle
- at the midpoint of the hypotenuse, DH
- outside the triangle
- at F, the vertex of the right angle
Ren marks three towns on a map, making triangle DFH with an obtuse angle at F. Where is the circumcenter of triangle DFH?
Sketch, not to scale: obtuse triangle DFH with the obtuse angle at F; DH is the longest side. Sketch, not to scale: obtuse triangle DFH with the obtuse angle at F; DH is the longest side. F D H Not to scale - at F, the vertex of the obtuse angle
- outside the triangle
- inside the triangle
- at the midpoint of the longest side, DH
Tala draws the side of a ramp as right triangle DFH with the right angle at F. Where is the orthocenter of triangle DFH?
Sketch, not to scale: right triangle DFH with the right-angle mark at F; DH is the longest side. Sketch, not to scale: right triangle DFH with the right-angle mark at F; DH is the longest side. F D H Not to scale - inside the triangle
- at F, the vertex of the right angle
- at the midpoint of the hypotenuse, DH
- outside the triangle
Zee draws the front of a wide tent as triangle DFH with an obtuse angle at F. Where is the incenter of triangle DFH?
Sketch, not to scale: obtuse triangle DFH with the obtuse angle at F; DH is the longest side. Sketch, not to scale: obtuse triangle DFH with the obtuse angle at F; DH is the longest side. F D H Not to scale - at F, the vertex of the obtuse angle
- outside the triangle
- at the midpoint of the longest side, DH
- inside the triangle
Ari marks three towns on a grid map: D(1, 2), F(7, 4) and H(4, 9). What are the coordinates of the centroid of triangle DFH?
Coordinate grid, 1 unit per square: points D(1, 2), F(7, 4) and H(4, 9), joined into triangle DFH. Coordinate grid, 1 unit per square: points D(1, 2), F(7, 4) and H(4, 9), joined into triangle DFH. D F H Bo plans three park lamps on a grid: D(2, 1), F(8, 3) and H(5, 11). What are the coordinates of the centroid of triangle DFH?
Coordinate grid, 1 unit per square: points D(2, 1), F(8, 3) and H(5, 11), joined into triangle DFH. Coordinate grid, 1 unit per square: points D(2, 1), F(8, 3) and H(5, 11), joined into triangle DFH. D F H Esme plots three classrooms on a grid map of the school: D(0, 3), F(6, 0) and H(9, 9). What are the coordinates of the centroid of triangle DFH?
Coordinate grid, 1 unit per square: points D(0, 3), F(6, 0) and H(9, 9), joined into triangle DFH. Coordinate grid, 1 unit per square: points D(0, 3), F(6, 0) and H(9, 9), joined into triangle DFH. D F H Jun draws triangle DFH on grid paper: D(3, 6), F(10, 2) and H(5, 4). What are the coordinates of the centroid of triangle DFH?
Coordinate grid, 1 unit per square: points D(3, 6), F(10, 2) and H(5, 4), joined into triangle DFH. Coordinate grid, 1 unit per square: points D(3, 6), F(10, 2) and H(5, 4), joined into triangle DFH. D F H