This math topic focuses on understanding the geometry of isosceles triangles, specifically on determining angle measurements when given a reference of double angles. It includes multiple-choice questions where learners identify the correct angle measurements for given angles labeled as 'R', 'S', and 'Q' within various isosceles triangle diagrams. This topic is part of a broader unit on isosceles and equilateral triangles, and it enhances spatial reasoning and knowledge of triangle properties.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Practice:
Isosceles, Solve Angle from Double Angle
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
What do we know about angle 'R'?
Geometry of Triangles - Isosceles, Solve Angle from Double Angle Worksheet
| Math worksheet on 'Geometry of Triangles - Isosceles, Solve Angle from Double Angle (Level 1)'. Part of a broader unit on 'Geometry - Isosceles and Equilateral Triangles' Learn online: app.mobius.academy/math/units/geometry_triangles_isosceles_equilateral_intro/ |
1
| What do we know about angle 'R'? |
a
| 55 |
b
| 45 |
c
| 100 |
d
| 50 |
e
| 60 |
f
| 70 |
2
| What do we know about angle 'Q'? |
a
| 45 |
b
| 50 |
c
| 60 |
d
| 55 |
e
| 70 |
f
| 80 |
3
| What do we know about angle 'S'? |
a
| 50 |
b
| 55 |
c
| 70 |
d
| 45 |
e
| 40 |
f
| 60 |
4
| What do we know about angle 'Q'? |
a
| 80 |
b
| 50 |
c
| 70 |
d
| 60 |
e
| 45 |
f
| 55 |
5
| What do we know about angle 'S'? |
a
| 45 |
b
| 55 |
c
| 70 |
d
| 80 |
e
| 60 |
f
| 50 |
6
| What do we know about angle 'S'? |
a
| 55 |
b
| 45 |
c
| 50 |
d
| 60 |
e
| 70 |
f
| 80 |
7
| What do we know about angle 'R'? |
a
| 55 |
b
| 45 |
c
| 20 |
d
| 70 |
e
| 50 |
f
| 60 |