This math topic focuses on using a Cartesian grid to solve geometry problems involving calculating the area of obtuse triangles and identifying missing coordinates, potentially including negative values. The exercises require students to apply their understanding of the area formula for triangles and coordinate geometry to deduce missing x or y values for specified points on triangles plotted on a grid, given the area of the triangle.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Area (Obtuse Triangle) to Missing Coordinate - Including Negative
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
Find the missing value for y if the triangle has an area of 45
Cartesian Grid - Area (Obtuse Triangle) to Missing Coordinate - Including Negative Worksheet
| Math worksheet on 'Cartesian Grid - Area (Obtuse Triangle) to Missing Coordinate - Including Negative (Level 2)'. Part of a broader unit on 'Cartesian Grid Geometry Logic - Practice' Learn online: app.mobius.academy/math/units/cartesian_grid_geometry_logic_practice/ |
1
| Find the missing value for y if the triangle has an area of 21 |
a
| 1 |
b
| 6 |
c
| -11 |
d
| 3 |
e
| -3 |
f
| -6 |
2
| Find the missing value for y if the triangle has an area of 27.5 |
a
| 7 |
b
| 12 |
c
| 8 |
d
| -1 |
e
| 11 |
f
| 6 |
3
| Find the missing value for y if the triangle has an area of 33 |
a
| 6 |
b
| 7 |
c
| 3 |
d
| 8 |
e
| 5 |
f
| 16 |
4
| Find the missing value for x if the triangle has an area of 52.5 |
a
| 6 |
b
| -1 |
c
| 8 |
d
| 1 |
e
| 7 |
f
| -2 |
5
| Find the missing value for x if the triangle has an area of 31.5 |
a
| -3 |
b
| 1 |
c
| -5 |
d
| -1 |
e
| 0 |
f
| 9 |
6
| Find the missing value for y if the triangle has an area of 27 |
a
| -1 |
b
| -9 |
c
| -2 |
d
| -6 |
e
| 1 |
f
| 0 |
7
| Find the missing value for y if the triangle has an area of 35 |
a
| 4 |
b
| 2 |
c
| -5 |
d
| -4 |
e
| -11 |
f
| -15 |